Fixed blow rate chances.

L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/Backstab.java

@@ -33,14 +33,14 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class Backstab extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
 	private final boolean _overHit;
 	
 	public Backstab(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
 		_overHit = params.getBoolean("overHit", false);
 	}
@@ -48,7 +48,7 @@ public final class Backstab extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/FatalBlow.java

@@ -22,7 +22,6 @@ import java.util.Set;
 
 import com.l2jmobius.gameserver.enums.ShotType;
 import com.l2jmobius.gameserver.model.StatsSet;
-import com.l2jmobius.gameserver.model.actor.L2Attackable;
 import com.l2jmobius.gameserver.model.actor.L2Character;
 import com.l2jmobius.gameserver.model.effects.AbstractEffect;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
@@ -38,27 +37,24 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class FatalBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
-	private final boolean _overHit;
-	
 	private final Set<AbnormalType> _abnormals;
 	private final double _abnormalPower;
 	
 	public FatalBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
-		_overHit = params.getBoolean("overHit", false);
 		
-		final String abnormals = params.getString("abnormalType", null);
+		String abnormals = params.getString("abnormalType", null);
 		if ((abnormals != null) && !abnormals.isEmpty())
 		{
 			_abnormals = new HashSet<>();
 			for (String slot : abnormals.split(";"))
 			{
-				_abnormals.add(AbnormalType.getAbnormalType(slot));
+				_abnormals.add(Enum.valueOf(AbnormalType.class, slot));
 			}
 		}
 		else
@@ -71,7 +67,7 @@ public final class FatalBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override
@@ -94,11 +90,6 @@ public final class FatalBlow extends AbstractEffect
 			return;
 		}
 		
-		if (_overHit && effected.isAttackable())
-		{
-			((L2Attackable) effected).overhitEnabled(true);
-		}
-		
 		double power = _power;
 		
 		// Check if we apply an abnormal modifier

L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/SoulBlow.java

@@ -33,13 +33,13 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class SoulBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final boolean _overHit;
 	
 	public SoulBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_overHit = params.getBoolean("overHit", false);
 	}
 	
@@ -52,7 +52,7 @@ public final class SoulBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00000-00099.xml

@@ -1784,7 +1784,7 @@
 					<value level="24">977</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3290,7 +3290,7 @@
 					<value level="36">15</value>
 					<value level="37">15</value>
 				</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00200-00299.xml

@@ -4526,9 +4526,10 @@
 					<value level="37">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00300-00399.xml

@@ -1079,12 +1079,13 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Bluff">
 				<chance>80</chance>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>
@@ -1715,10 +1716,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00400-00499.xml

@@ -1204,9 +1204,10 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00500-00599.xml

@@ -525,7 +525,7 @@
 					<value level="28">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4198,9 +4198,10 @@
 					<value level="4">5199</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00600-00699.xml

@@ -2634,9 +2634,10 @@
 			<effect name="FatalBlow">
 				<power>6969</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/00900-00999.xml

@@ -1604,7 +1604,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/01500-01599.xml

@@ -3668,7 +3668,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/04000-04099.xml

@@ -2431,7 +2431,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/04100-04199.xml

@@ -3417,7 +3417,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4046,7 +4046,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/04500-04599.xml

@@ -2542,7 +2542,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="DamOverTime">
 				<power>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/04700-04799.xml

@@ -1082,8 +1082,8 @@
 					<value level="16">9648</value>
 					<value level="17">9830</value>
 				</power>
-				<criticalChance>30</criticalChance>
+				<criticalChance>10</criticalChance>
-				<chance>50</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2305,7 +2305,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2365,7 +2365,7 @@
 					<value level="11">38806</value>
 					<value level="12">43290</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2425,7 +2425,7 @@
 					<value level="11">20667</value>
 					<value level="12">23023</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2485,7 +2485,7 @@
 					<value level="11">19381</value>
 					<value level="12">21645</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2545,7 +2545,7 @@
 					<value level="11">18140</value>
 					<value level="12">20268</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3600,7 +3600,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3660,7 +3660,7 @@
 					<value level="11">64677</value>
 					<value level="12">72150</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3720,7 +3720,7 @@
 					<value level="11">34445</value>
 					<value level="12">38371</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3780,7 +3780,7 @@
 					<value level="11">32302</value>
 					<value level="12">36075</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3840,7 +3840,7 @@
 					<value level="11">30232</value>
 					<value level="12">33780</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/05000-05099.xml

@@ -2817,7 +2817,7 @@
 					<value level="3">7306</value>
 					<value level="4">8602</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="PhysicalMute" />
 		</effects>
@@ -2916,15 +2916,13 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>6335</power>
-				<chance>15</chance>
+				<chanceBoost>150</chanceBoost>
 			</effect>
 			<effect name="Speed">
 				<amount>40</amount>
 				<mode>DIFF</mode>
 			</effect>
 		</effects>
-		<selfEffects>
-		</selfEffects>
 	</skill>
 	<skill id="5085" toLevel="1" name="Anesthesia">
 		<!-- Confirmed CT2.5 -->

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/05100-05199.xml

@@ -1309,7 +1309,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>39544</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/06000-06099.xml

@@ -1861,7 +1861,7 @@
 					<value level="12">6844</value>
 					<value level="13">6960</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/08500-08599.xml

@@ -1536,10 +1536,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/10500-10599.xml

@@ -494,7 +494,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>30</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -516,7 +516,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>30</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -610,7 +610,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>15</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -632,7 +632,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>15</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -739,7 +739,7 @@
 				<criticalChance>20</criticalChance>
 				<abnormalType>BLEEDING</abnormalType>
 				<abnormalPower>4130</abnormalPower>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -762,8 +762,8 @@
 				</power>
 				<criticalChance>20</criticalChance>
 				<abnormalType>BLEEDING</abnormalType>
-				<abnormalPower>4130</abnormalPower>
+				<abnormalPower>4130</abnormalPower> <!-- TODO: Must have different values per level. -->
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -838,7 +838,7 @@
 					<value fromLevel="3" toLevel="7" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>20</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -856,7 +856,7 @@
 					<value fromLevel="3" toLevel="7" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>20</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -2929,7 +2929,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>8875</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3117,7 +3117,7 @@
 					<value level="6">27993</value>
 					<value level="7">29472</value>
 				</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Speed">
 				<amount>-23</amount>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/10700-10799.xml

@@ -327,11 +327,12 @@
 				<allowedSkills>10279;10517;10025;10776;11770;1904;11264;11093;13314;1912</allowedSkills>
 			</effect>
 			<effect name="FatalBlow">
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>8875</power>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/11300-11399.xml

@@ -3613,7 +3613,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<!-- Guessed -->
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>
 					<value level="1">45696</value>
 					<value level="2">47772</value>
@@ -3621,7 +3621,7 @@
 				</power>
 			</effect>
 			<effect name="Lethal">
-				<!-- Guessed -->
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>
@@ -3647,7 +3647,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<!-- Guessed -->
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>
 					<value level="1">51411</value>
 					<value level="2">53747</value>
@@ -3655,7 +3655,7 @@
 				</power>
 			</effect>
 			<effect name="Lethal">
-				<!-- Guessed -->
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/14200-14299.xml

@@ -2857,7 +2857,7 @@
 					<value level="6">5029</value>
 					<value level="7">5479</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="DamOverTime">
 				<power>100</power>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/14500-14599.xml

@@ -2872,9 +2872,10 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>7127</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 			<effect name="DispelBySlot">

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/14600-14699.xml

@@ -2238,9 +2238,10 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>1700</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/14900-14999.xml

@@ -1546,7 +1546,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>3000</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -1674,7 +1674,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>3000</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/20000-20099.xml

@@ -64,7 +64,7 @@
 			<effect name="FatalBlow">
 				<power>3420</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_1.0_Ertheia/dist/game/data/xsd/skills.xsd

@@ -830,6 +830,7 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
+															<xs:element name="chanceBoost" type="xs:unsignedShort" />
 															<xs:element name="dispel">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -895,8 +896,8 @@
 																</xs:complexType>
 															</xs:element>
 															<xs:element name="weaponType">
-																<xs:complexType mixed="true">
+																<xs:complexType>
-																	<xs:sequence minOccurs="0">
+																	<xs:sequence>
 																		<xs:element minOccurs="0" name="weaponType">
 																			<xs:complexType>
 																				<xs:sequence>
@@ -1158,6 +1159,21 @@
 																</xs:complexType>
 															</xs:element>
 															<xs:element name="side" type="xs:string" />
+															<xs:element name="fullLethal">
+																<xs:complexType mixed="true">
+																	<xs:sequence minOccurs="0">
+																		<xs:element maxOccurs="unbounded" name="value">
+																			<xs:complexType>
+																				<xs:simpleContent>
+																					<xs:extension base="xs:unsignedByte">
+																						<xs:attribute name="level" type="xs:unsignedByte" use="required" />
+																					</xs:extension>
+																				</xs:simpleContent>
+																			</xs:complexType>
+																		</xs:element>
+																	</xs:sequence>
+																</xs:complexType>
+															</xs:element>
 															<xs:element name="PARALYZE">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -1499,21 +1515,6 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
-															<xs:element name="fullLethal">
-																<xs:complexType mixed="true">
-																	<xs:sequence minOccurs="0">
-																		<xs:element maxOccurs="unbounded" name="value">
-																			<xs:complexType>
-																				<xs:simpleContent>
-																					<xs:extension base="xs:unsignedByte">
-																						<xs:attribute name="level" type="xs:unsignedByte" use="required" />
-																					</xs:extension>
-																				</xs:simpleContent>
-																			</xs:complexType>
-																		</xs:element>
-																	</xs:sequence>
-																</xs:complexType>
-															</xs:element>
 															<xs:element name="itemId">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -1986,6 +1987,7 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
+															<xs:element name="pAtkMod" type="xs:unsignedByte" />
 															<xs:element name="isSummonSpawn" type="xs:boolean" />
 															<xs:element name="randomOffset" type="xs:unsignedByte" />
 															<xs:element name="debuffModifier" type="xs:decimal" />
@@ -2021,7 +2023,6 @@
 															</xs:element>
 															<xs:element name="damageModifier" type="xs:decimal" />
 															<xs:element name="animationSpeed" type="xs:unsignedShort" />
-															<xs:element name="pAtkMod" type="xs:unsignedByte" />
 														</xs:choice>
 													</xs:sequence>
 													<xs:attribute name="name" type="xs:string" use="required" />
@@ -2347,22 +2348,6 @@
 								<xs:element name="effect">
 									<xs:complexType>
 										<xs:sequence>
-											<xs:element minOccurs="0" name="amount">
-												<xs:complexType>
-													<xs:sequence>
-														<xs:element maxOccurs="unbounded" name="value">
-															<xs:complexType>
-																<xs:simpleContent>
-																	<xs:extension base="xs:unsignedByte">
-																		<xs:attribute name="level" type="xs:unsignedByte" use="required" />
-																	</xs:extension>
-																</xs:simpleContent>
-															</xs:complexType>
-														</xs:element>
-													</xs:sequence>
-												</xs:complexType>
-											</xs:element>
-											<xs:element minOccurs="0" name="attribute" type="xs:string" />
 											<xs:element minOccurs="0" name="ON_MAGIC_SKILL" />
 											<xs:element minOccurs="0" name="ON_CRITICAL_SKILL" />
 											<xs:element minOccurs="0" name="ON_EQUIP" />
@@ -2490,7 +2475,7 @@
 														<xs:element minOccurs="0" name="criticalChance" type="xs:unsignedByte" />
 														<xs:element minOccurs="0" name="abnormalType" type="xs:string" />
 														<xs:element minOccurs="0" name="abnormalPower" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="chance" type="xs:decimal" />
+														<xs:element minOccurs="0" name="chanceBoost" type="xs:unsignedShort" />
 														<xs:element minOccurs="0" name="overHit" type="xs:boolean" />
 														<xs:element minOccurs="0" name="ticks" type="xs:unsignedByte" />
 													</xs:sequence>
@@ -2536,7 +2521,7 @@
 														<xs:element minOccurs="0" name="criticalChance" type="xs:unsignedByte" />
 														<xs:element minOccurs="0" name="abnormalType" type="xs:string" />
 														<xs:element minOccurs="0" name="abnormalPower" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="chance" type="xs:decimal" />
+														<xs:element minOccurs="0" name="chanceBoost" type="xs:unsignedShort" />
 														<xs:element minOccurs="0" name="overHit" type="xs:boolean" />
 														<xs:element minOccurs="0" name="ticks" type="xs:unsignedByte" />
 													</xs:sequence>

L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/model/stats/Formulas.java

@@ -36,6 +36,7 @@ import com.l2jmobius.gameserver.model.actor.instance.L2StaticObjectInstance;
 import com.l2jmobius.gameserver.model.cubic.CubicInstance;
 import com.l2jmobius.gameserver.model.effects.EffectFlag;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
+import com.l2jmobius.gameserver.model.interfaces.ILocational;
 import com.l2jmobius.gameserver.model.items.L2Armor;
 import com.l2jmobius.gameserver.model.items.L2Item;
 import com.l2jmobius.gameserver.model.items.L2Weapon;
@@ -264,6 +265,37 @@ public final class Formulas
 		return finalRate > Rnd.get(1000);
 	}
 	
+	/**
+	 * Gets the default (10% for side, 30% for back) positional critical rate bonus and multiplies it by any buffs that give positional critical rate bonus.
+	 * @param activeChar the attacker.
+	 * @param target the target.
+	 * @return a multiplier representing the positional critical rate bonus. Autoattacks for example get this bonus on top of the already capped critical rate of 500.
+	 */
+	public static double calcCriticalPositionBonus(L2Character activeChar, L2Character target)
+	{
+		// final Position position = activeChar.getStat().has(Stats.ATTACK_BEHIND) ? Position.BACK : Position.getPosition(activeChar, target);
+		switch (Position.getPosition(activeChar, target))
+		{
+			case SIDE: // 10% Critical Chance bonus when attacking from side.
+			{
+				return 1.1 * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.SIDE);
+			}
+			case BACK: // 30% Critical Chance bonus when attacking from back.
+			{
+				return 1.3 * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.BACK);
+			}
+			default: // No Critical Chance bonus when attacking from front.
+			{
+				return activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.FRONT);
+			}
+		}
+	}
+	
+	public static double calcCriticalHeightBonus(ILocational from, ILocational target)
+	{
+		return ((((CommonUtil.constrain(from.getZ() - target.getZ(), -25, 25) * 4) / 5) + 10) / 100) + 1;
+	}
+	
 	/**
 	 * @param attacker
 	 * @param target
@@ -1018,21 +1050,37 @@ public final class Formulas
 		return cha.getStat().getValue(Stats.FALL, (fallHeight * cha.getMaxHp()) / 1000.0);
 	}
 	
-	public static boolean calcBlowSuccess(L2Character activeChar, L2Character target, Skill skill, double blowChance)
+	/**
+	 * Basic chance formula:<br>
+	 * <ul>
+	 * <li>chance = weapon_critical * dex_bonus * crit_height_bonus * crit_pos_bonus * effect_bonus * fatal_blow_rate</li>
+	 * <li>weapon_critical = (12 for daggers)</li>
+	 * <li>dex_bonus = dex modifier bonus for current dex (Seems unused in GOD, so its not used in formula).</li>
+	 * <li>crit_height_bonus = (z_diff * 4 / 5 + 10) / 100 + 1 or alternatively (z_diff * 0.008) + 1.1. Be aware of z_diff constraint of -25 to 25.</li>
+	 * <li>crit_pos_bonus = crit_pos(front = 1, side = 1.1, back = 1.3) * p_critical_rate_position_bonus</li>
+	 * <li>effect_bonus = (p2 + 100) / 100, p2 - 2nd param of effect. Blow chance of effect.</li>
+	 * </ul>
+	 * Chance cannot be higher than 80%.
+	 * @param activeChar
+	 * @param target
+	 * @param skill
+	 * @param chanceBoost
+	 * @return
+	 */
+	public static boolean calcBlowSuccess(L2Character activeChar, L2Character target, Skill skill, double chanceBoost)
 	{
-		final double weaponCritical = 12; // Dagger weapon critical mod is 12... TODO: Make it work for other weapons.
+		final L2Weapon weapon = activeChar.getActiveWeaponItem();
+		final double weaponCritical = weapon != null ? weapon.getStats(Stats.CRITICAL_RATE, activeChar.getTemplate().getBaseCritRate()) : activeChar.getTemplate().getBaseCritRate();
 		// double dexBonus = BaseStats.DEX.calcBonus(activeChar); Not used in GOD
-		final double critHeightBonus = ((((CommonUtil.constrain(activeChar.getZ() - target.getZ(), -25, 25) * 4) / 5) + 10) / 100) + 1;
+		final double critHeightBonus = calcCriticalHeightBonus(activeChar, target);
-		final Position position = Position.getPosition(activeChar, target);
+		final double criticalPosition = calcCriticalPositionBonus(activeChar, target); // 30% chance from back, 10% chance from side. Include buffs that give positional crit rate.
-		final double criticalPosition = position == Position.BACK ? 1.3 : position == Position.SIDE ? 1.1 : 1; // 30% chance from back, 10% chance from side.
+		final double chanceBoostMod = (100 + chanceBoost) / 100;
-		final double criticalPositionMod = criticalPosition * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, position);
 		final double blowRateMod = activeChar.getStat().getValue(Stats.BLOW_RATE, 1);
-		blowChance = (weaponCritical + blowChance) * 10;
 		
-		final double rate = blowChance * critHeightBonus * criticalPositionMod * blowRateMod;
+		final double rate = criticalPosition * critHeightBonus * weaponCritical * chanceBoostMod * blowRateMod;
 		
 		// Blow rate is capped at 80%
-		return Rnd.get(1000) < Math.min(rate, 800);
+		return Rnd.get(100) < Math.min(rate, 80);
 	}
 	
 	public static List<BuffInfo> calcCancelStealEffects(L2Character activeChar, L2Character target, Skill skill, DispelSlotType slot, int rate, int max)

L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/Backstab.java

@@ -33,14 +33,14 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class Backstab extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
 	private final boolean _overHit;
 	
 	public Backstab(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
 		_overHit = params.getBoolean("overHit", false);
 	}
@@ -48,7 +48,7 @@ public final class Backstab extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/FatalBlow.java

@@ -22,7 +22,6 @@ import java.util.Set;
 
 import com.l2jmobius.gameserver.enums.ShotType;
 import com.l2jmobius.gameserver.model.StatsSet;
-import com.l2jmobius.gameserver.model.actor.L2Attackable;
 import com.l2jmobius.gameserver.model.actor.L2Character;
 import com.l2jmobius.gameserver.model.effects.AbstractEffect;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
@@ -38,27 +37,24 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class FatalBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
-	private final boolean _overHit;
-	
 	private final Set<AbnormalType> _abnormals;
 	private final double _abnormalPower;
 	
 	public FatalBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
-		_overHit = params.getBoolean("overHit", false);
 		
-		final String abnormals = params.getString("abnormalType", null);
+		String abnormals = params.getString("abnormalType", null);
 		if ((abnormals != null) && !abnormals.isEmpty())
 		{
 			_abnormals = new HashSet<>();
 			for (String slot : abnormals.split(";"))
 			{
-				_abnormals.add(AbnormalType.getAbnormalType(slot));
+				_abnormals.add(Enum.valueOf(AbnormalType.class, slot));
 			}
 		}
 		else
@@ -71,7 +67,7 @@ public final class FatalBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override
@@ -94,11 +90,6 @@ public final class FatalBlow extends AbstractEffect
 			return;
 		}
 		
-		if (_overHit && effected.isAttackable())
-		{
-			((L2Attackable) effected).overhitEnabled(true);
-		}
-		
 		double power = _power;
 		
 		// Check if we apply an abnormal modifier

L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/SoulBlow.java

@@ -33,13 +33,13 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class SoulBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final boolean _overHit;
 	
 	public SoulBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_overHit = params.getBoolean("overHit", false);
 	}
 	
@@ -52,7 +52,7 @@ public final class SoulBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00000-00099.xml

@@ -1784,7 +1784,7 @@
 					<value level="24">977</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3290,7 +3290,7 @@
 					<value level="36">15</value>
 					<value level="37">15</value>
 				</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00200-00299.xml

@@ -4526,9 +4526,10 @@
 					<value level="37">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00300-00399.xml

@@ -1079,12 +1079,13 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Bluff">
 				<chance>80</chance>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>
@@ -1715,10 +1716,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00400-00499.xml

@@ -1210,9 +1210,10 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00500-00599.xml

@@ -525,7 +525,7 @@
 					<value level="28">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4201,9 +4201,10 @@
 					<value level="4">5199</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00600-00699.xml

@@ -2634,9 +2634,10 @@
 			<effect name="FatalBlow">
 				<power>6969</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/00900-00999.xml

@@ -1604,7 +1604,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/01500-01599.xml

@@ -3668,7 +3668,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/04000-04099.xml

@@ -2431,7 +2431,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/04100-04199.xml

@@ -3417,7 +3417,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4046,7 +4046,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/04500-04599.xml

@@ -2542,7 +2542,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="DamOverTime">
 				<power>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/04700-04799.xml

@@ -1082,8 +1082,8 @@
 					<value level="16">9648</value>
 					<value level="17">9830</value>
 				</power>
-				<criticalChance>30</criticalChance>
+				<criticalChance>10</criticalChance>
-				<chance>50</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2305,7 +2305,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2365,7 +2365,7 @@
 					<value level="11">38806</value>
 					<value level="12">43290</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2425,7 +2425,7 @@
 					<value level="11">20667</value>
 					<value level="12">23023</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2485,7 +2485,7 @@
 					<value level="11">19381</value>
 					<value level="12">21645</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2545,7 +2545,7 @@
 					<value level="11">18140</value>
 					<value level="12">20268</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3600,7 +3600,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3660,7 +3660,7 @@
 					<value level="11">64677</value>
 					<value level="12">72150</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3720,7 +3720,7 @@
 					<value level="11">34445</value>
 					<value level="12">38371</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3780,7 +3780,7 @@
 					<value level="11">32302</value>
 					<value level="12">36075</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3840,7 +3840,7 @@
 					<value level="11">30232</value>
 					<value level="12">33780</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/05000-05099.xml

@@ -2817,7 +2817,7 @@
 					<value level="3">7306</value>
 					<value level="4">8602</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="PhysicalMute" />
 		</effects>
@@ -2916,15 +2916,13 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>6335</power>
-				<chance>15</chance>
+				<chanceBoost>150</chanceBoost>
 			</effect>
 			<effect name="Speed">
 				<amount>40</amount>
 				<mode>DIFF</mode>
 			</effect>
 		</effects>
-		<selfEffects>
-		</selfEffects>
 	</skill>
 	<skill id="5085" toLevel="1" name="Anesthesia">
 		<!-- Confirmed CT2.5 -->

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/05100-05199.xml

@@ -1309,7 +1309,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>39544</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/06000-06099.xml

@@ -1861,7 +1861,7 @@
 					<value level="12">6844</value>
 					<value level="13">6960</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/08500-08599.xml

@@ -1536,10 +1536,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/10500-10599.xml

@@ -494,7 +494,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>30</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -516,7 +516,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>30</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -610,7 +610,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>15</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -632,7 +632,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>15</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -739,7 +739,7 @@
 				<criticalChance>20</criticalChance>
 				<abnormalType>BLEEDING</abnormalType>
 				<abnormalPower>4130</abnormalPower>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -762,8 +762,8 @@
 				</power>
 				<criticalChance>20</criticalChance>
 				<abnormalType>BLEEDING</abnormalType>
-				<abnormalPower>4130</abnormalPower>
+				<abnormalPower>4130</abnormalPower> <!-- TODO: Must have different values per level. -->
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -838,7 +838,7 @@
 					<value fromLevel="3" toLevel="7" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>20</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -856,7 +856,7 @@
 					<value fromLevel="3" toLevel="7" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>20</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -2935,7 +2935,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>8875</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3123,7 +3123,7 @@
 					<value level="6">27993</value>
 					<value level="7">29472</value>
 				</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Speed">
 				<amount>-23</amount>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/10700-10799.xml

@@ -337,11 +337,12 @@
 				<allowedSkills>10279;10517;10025;10776;11770;1904;11264;11093;13314;1912</allowedSkills>
 			</effect>
 			<effect name="FatalBlow">
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>8875</power>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/11300-11399.xml

@@ -3618,7 +3618,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<!-- Guessed -->
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>
 					<value level="1">45696</value>
 					<value level="2">47772</value>
@@ -3626,7 +3626,7 @@
 				</power>
 			</effect>
 			<effect name="Lethal">
-				<!-- Guessed -->
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>
@@ -3652,7 +3652,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<!-- Guessed -->
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>
 					<value level="1">51411</value>
 					<value level="2">53747</value>
@@ -3660,7 +3660,7 @@
 				</power>
 			</effect>
 			<effect name="Lethal">
-				<!-- Guessed -->
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/14200-14299.xml

@@ -2857,7 +2857,7 @@
 					<value level="6">5029</value>
 					<value level="7">5479</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="DamOverTime">
 				<power>100</power>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/14500-14599.xml

@@ -2872,9 +2872,10 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>7127</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 			<effect name="DispelBySlot">

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/14600-14699.xml

@@ -2238,9 +2238,10 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>1700</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/14900-14999.xml

@@ -1546,7 +1546,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>3000</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -1674,7 +1674,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>3000</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/20000-20099.xml

@@ -64,7 +64,7 @@
 			<effect name="FatalBlow">
 				<power>3420</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_2.5_Underground/dist/game/data/xsd/skills.xsd

@@ -834,6 +834,7 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
+															<xs:element name="chanceBoost" type="xs:unsignedShort" />
 															<xs:element name="dispel">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -899,8 +900,8 @@
 																</xs:complexType>
 															</xs:element>
 															<xs:element name="weaponType">
-																<xs:complexType mixed="true">
+																<xs:complexType>
-																	<xs:sequence minOccurs="0">
+																	<xs:sequence>
 																		<xs:element minOccurs="0" name="weaponType">
 																			<xs:complexType>
 																				<xs:sequence>
@@ -1162,6 +1163,21 @@
 																</xs:complexType>
 															</xs:element>
 															<xs:element name="side" type="xs:string" />
+															<xs:element name="fullLethal">
+																<xs:complexType mixed="true">
+																	<xs:sequence minOccurs="0">
+																		<xs:element maxOccurs="unbounded" name="value">
+																			<xs:complexType>
+																				<xs:simpleContent>
+																					<xs:extension base="xs:unsignedByte">
+																						<xs:attribute name="level" type="xs:unsignedByte" use="required" />
+																					</xs:extension>
+																				</xs:simpleContent>
+																			</xs:complexType>
+																		</xs:element>
+																	</xs:sequence>
+																</xs:complexType>
+															</xs:element>
 															<xs:element name="PARALYZE">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -1503,21 +1519,6 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
-															<xs:element name="fullLethal">
-																<xs:complexType mixed="true">
-																	<xs:sequence minOccurs="0">
-																		<xs:element maxOccurs="unbounded" name="value">
-																			<xs:complexType>
-																				<xs:simpleContent>
-																					<xs:extension base="xs:unsignedByte">
-																						<xs:attribute name="level" type="xs:unsignedByte" use="required" />
-																					</xs:extension>
-																				</xs:simpleContent>
-																			</xs:complexType>
-																		</xs:element>
-																	</xs:sequence>
-																</xs:complexType>
-															</xs:element>
 															<xs:element name="itemId">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -2074,6 +2075,7 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
+															<xs:element name="pAtkMod" type="xs:unsignedByte" />
 															<xs:element name="isSummonSpawn" type="xs:boolean" />
 															<xs:element name="randomOffset" type="xs:unsignedByte" />
 															<xs:element name="HATE">
@@ -2109,7 +2111,6 @@
 															<xs:element name="debuffModifier" type="xs:decimal" />
 															<xs:element name="damageModifier" type="xs:decimal" />
 															<xs:element name="animationSpeed" type="xs:unsignedShort" />
-															<xs:element name="pAtkMod" type="xs:unsignedByte" />
 														</xs:choice>
 													</xs:sequence>
 													<xs:attribute name="name" type="xs:string" use="required" />
@@ -2470,22 +2471,6 @@
 								<xs:element name="effect">
 									<xs:complexType>
 										<xs:sequence>
-											<xs:element minOccurs="0" name="amount">
-												<xs:complexType>
-													<xs:sequence>
-														<xs:element maxOccurs="unbounded" name="value">
-															<xs:complexType>
-																<xs:simpleContent>
-																	<xs:extension base="xs:unsignedByte">
-																		<xs:attribute name="level" type="xs:unsignedByte" use="required" />
-																	</xs:extension>
-																</xs:simpleContent>
-															</xs:complexType>
-														</xs:element>
-													</xs:sequence>
-												</xs:complexType>
-											</xs:element>
-											<xs:element minOccurs="0" name="attribute" type="xs:string" />
 											<xs:element minOccurs="0" name="ON_MAGIC_SKILL" />
 											<xs:element minOccurs="0" name="ON_CRITICAL_SKILL" />
 											<xs:element minOccurs="0" name="ON_EQUIP" />
@@ -2613,7 +2598,7 @@
 														<xs:element minOccurs="0" name="criticalChance" type="xs:unsignedByte" />
 														<xs:element minOccurs="0" name="abnormalType" type="xs:string" />
 														<xs:element minOccurs="0" name="abnormalPower" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="chance" type="xs:decimal" />
+														<xs:element minOccurs="0" name="chanceBoost" type="xs:unsignedShort" />
 														<xs:element minOccurs="0" name="overHit" type="xs:boolean" />
 														<xs:element minOccurs="0" name="ticks" type="xs:unsignedByte" />
 													</xs:sequence>
@@ -2659,7 +2644,7 @@
 														<xs:element minOccurs="0" name="criticalChance" type="xs:unsignedByte" />
 														<xs:element minOccurs="0" name="abnormalType" type="xs:string" />
 														<xs:element minOccurs="0" name="abnormalPower" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="chance" type="xs:decimal" />
+														<xs:element minOccurs="0" name="chanceBoost" type="xs:unsignedShort" />
 														<xs:element minOccurs="0" name="overHit" type="xs:boolean" />
 														<xs:element minOccurs="0" name="ticks" type="xs:unsignedByte" />
 													</xs:sequence>

L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/model/stats/Formulas.java

@@ -36,6 +36,7 @@ import com.l2jmobius.gameserver.model.actor.instance.L2StaticObjectInstance;
 import com.l2jmobius.gameserver.model.cubic.CubicInstance;
 import com.l2jmobius.gameserver.model.effects.EffectFlag;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
+import com.l2jmobius.gameserver.model.interfaces.ILocational;
 import com.l2jmobius.gameserver.model.items.L2Armor;
 import com.l2jmobius.gameserver.model.items.L2Item;
 import com.l2jmobius.gameserver.model.items.L2Weapon;
@@ -264,6 +265,37 @@ public final class Formulas
 		return finalRate > Rnd.get(1000);
 	}
 	
+	/**
+	 * Gets the default (10% for side, 30% for back) positional critical rate bonus and multiplies it by any buffs that give positional critical rate bonus.
+	 * @param activeChar the attacker.
+	 * @param target the target.
+	 * @return a multiplier representing the positional critical rate bonus. Autoattacks for example get this bonus on top of the already capped critical rate of 500.
+	 */
+	public static double calcCriticalPositionBonus(L2Character activeChar, L2Character target)
+	{
+		// final Position position = activeChar.getStat().has(Stats.ATTACK_BEHIND) ? Position.BACK : Position.getPosition(activeChar, target);
+		switch (Position.getPosition(activeChar, target))
+		{
+			case SIDE: // 10% Critical Chance bonus when attacking from side.
+			{
+				return 1.1 * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.SIDE);
+			}
+			case BACK: // 30% Critical Chance bonus when attacking from back.
+			{
+				return 1.3 * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.BACK);
+			}
+			default: // No Critical Chance bonus when attacking from front.
+			{
+				return activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.FRONT);
+			}
+		}
+	}
+	
+	public static double calcCriticalHeightBonus(ILocational from, ILocational target)
+	{
+		return ((((CommonUtil.constrain(from.getZ() - target.getZ(), -25, 25) * 4) / 5) + 10) / 100) + 1;
+	}
+	
 	/**
 	 * @param attacker
 	 * @param target
@@ -1018,21 +1050,37 @@ public final class Formulas
 		return cha.getStat().getValue(Stats.FALL, (fallHeight * cha.getMaxHp()) / 1000.0);
 	}
 	
-	public static boolean calcBlowSuccess(L2Character activeChar, L2Character target, Skill skill, double blowChance)
+	/**
+	 * Basic chance formula:<br>
+	 * <ul>
+	 * <li>chance = weapon_critical * dex_bonus * crit_height_bonus * crit_pos_bonus * effect_bonus * fatal_blow_rate</li>
+	 * <li>weapon_critical = (12 for daggers)</li>
+	 * <li>dex_bonus = dex modifier bonus for current dex (Seems unused in GOD, so its not used in formula).</li>
+	 * <li>crit_height_bonus = (z_diff * 4 / 5 + 10) / 100 + 1 or alternatively (z_diff * 0.008) + 1.1. Be aware of z_diff constraint of -25 to 25.</li>
+	 * <li>crit_pos_bonus = crit_pos(front = 1, side = 1.1, back = 1.3) * p_critical_rate_position_bonus</li>
+	 * <li>effect_bonus = (p2 + 100) / 100, p2 - 2nd param of effect. Blow chance of effect.</li>
+	 * </ul>
+	 * Chance cannot be higher than 80%.
+	 * @param activeChar
+	 * @param target
+	 * @param skill
+	 * @param chanceBoost
+	 * @return
+	 */
+	public static boolean calcBlowSuccess(L2Character activeChar, L2Character target, Skill skill, double chanceBoost)
 	{
-		final double weaponCritical = 12; // Dagger weapon critical mod is 12... TODO: Make it work for other weapons.
+		final L2Weapon weapon = activeChar.getActiveWeaponItem();
+		final double weaponCritical = weapon != null ? weapon.getStats(Stats.CRITICAL_RATE, activeChar.getTemplate().getBaseCritRate()) : activeChar.getTemplate().getBaseCritRate();
 		// double dexBonus = BaseStats.DEX.calcBonus(activeChar); Not used in GOD
-		final double critHeightBonus = ((((CommonUtil.constrain(activeChar.getZ() - target.getZ(), -25, 25) * 4) / 5) + 10) / 100) + 1;
+		final double critHeightBonus = calcCriticalHeightBonus(activeChar, target);
-		final Position position = Position.getPosition(activeChar, target);
+		final double criticalPosition = calcCriticalPositionBonus(activeChar, target); // 30% chance from back, 10% chance from side. Include buffs that give positional crit rate.
-		final double criticalPosition = position == Position.BACK ? 1.3 : position == Position.SIDE ? 1.1 : 1; // 30% chance from back, 10% chance from side.
+		final double chanceBoostMod = (100 + chanceBoost) / 100;
-		final double criticalPositionMod = criticalPosition * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, position);
 		final double blowRateMod = activeChar.getStat().getValue(Stats.BLOW_RATE, 1);
-		blowChance = (weaponCritical + blowChance) * 10;
 		
-		final double rate = blowChance * critHeightBonus * criticalPositionMod * blowRateMod;
+		final double rate = criticalPosition * critHeightBonus * weaponCritical * chanceBoostMod * blowRateMod;
 		
 		// Blow rate is capped at 80%
-		return Rnd.get(1000) < Math.min(rate, 800);
+		return Rnd.get(100) < Math.min(rate, 80);
 	}
 	
 	public static List<BuffInfo> calcCancelStealEffects(L2Character activeChar, L2Character target, Skill skill, DispelSlotType slot, int rate, int max)

L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/Backstab.java

@@ -33,14 +33,14 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class Backstab extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
 	private final boolean _overHit;
 	
 	public Backstab(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
 		_overHit = params.getBoolean("overHit", false);
 	}
@@ -48,7 +48,7 @@ public final class Backstab extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/FatalBlow.java

@@ -22,7 +22,6 @@ import java.util.Set;
 
 import com.l2jmobius.gameserver.enums.ShotType;
 import com.l2jmobius.gameserver.model.StatsSet;
-import com.l2jmobius.gameserver.model.actor.L2Attackable;
 import com.l2jmobius.gameserver.model.actor.L2Character;
 import com.l2jmobius.gameserver.model.effects.AbstractEffect;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
@@ -38,27 +37,24 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class FatalBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
-	private final boolean _overHit;
-	
 	private final Set<AbnormalType> _abnormals;
 	private final double _abnormalPower;
 	
 	public FatalBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
-		_overHit = params.getBoolean("overHit", false);
 		
-		final String abnormals = params.getString("abnormalType", null);
+		String abnormals = params.getString("abnormalType", null);
 		if ((abnormals != null) && !abnormals.isEmpty())
 		{
 			_abnormals = new HashSet<>();
 			for (String slot : abnormals.split(";"))
 			{
-				_abnormals.add(AbnormalType.getAbnormalType(slot));
+				_abnormals.add(Enum.valueOf(AbnormalType.class, slot));
 			}
 		}
 		else
@@ -71,7 +67,7 @@ public final class FatalBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override
@@ -94,11 +90,6 @@ public final class FatalBlow extends AbstractEffect
 			return;
 		}
 		
-		if (_overHit && effected.isAttackable())
-		{
-			((L2Attackable) effected).overhitEnabled(true);
-		}
-		
 		double power = _power;
 		
 		// Check if we apply an abnormal modifier

L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/SoulBlow.java

@@ -33,13 +33,13 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class SoulBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final boolean _overHit;
 	
 	public SoulBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_overHit = params.getBoolean("overHit", false);
 	}
 	
@@ -52,7 +52,7 @@ public final class SoulBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00000-00099.xml

@@ -1784,7 +1784,7 @@
 					<value level="24">977</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3290,7 +3290,7 @@
 					<value level="36">15</value>
 					<value level="37">15</value>
 				</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00200-00299.xml

@@ -4526,9 +4526,10 @@
 					<value level="37">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00300-00399.xml

@@ -1079,12 +1079,13 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Bluff">
 				<chance>80</chance>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>
@@ -1715,10 +1716,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00400-00499.xml

@@ -1210,9 +1210,10 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00500-00599.xml

@@ -525,7 +525,7 @@
 					<value level="28">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4201,9 +4201,10 @@
 					<value level="4">5199</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00600-00699.xml

@@ -2634,9 +2634,10 @@
 			<effect name="FatalBlow">
 				<power>6969</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/00900-00999.xml

@@ -1604,7 +1604,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/01500-01599.xml

@@ -3668,7 +3668,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/04000-04099.xml

@@ -2431,7 +2431,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/04100-04199.xml

@@ -3417,7 +3417,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4046,7 +4046,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/04500-04599.xml

@@ -2542,7 +2542,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="DamOverTime">
 				<power>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/04700-04799.xml

@@ -1082,8 +1082,8 @@
 					<value level="16">9648</value>
 					<value level="17">9830</value>
 				</power>
-				<criticalChance>30</criticalChance>
+				<criticalChance>10</criticalChance>
-				<chance>50</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2305,7 +2305,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2365,7 +2365,7 @@
 					<value level="11">38806</value>
 					<value level="12">43290</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2425,7 +2425,7 @@
 					<value level="11">20667</value>
 					<value level="12">23023</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2485,7 +2485,7 @@
 					<value level="11">19381</value>
 					<value level="12">21645</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -2545,7 +2545,7 @@
 					<value level="11">18140</value>
 					<value level="12">20268</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3600,7 +3600,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3660,7 +3660,7 @@
 					<value level="11">64677</value>
 					<value level="12">72150</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3720,7 +3720,7 @@
 					<value level="11">34445</value>
 					<value level="12">38371</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3780,7 +3780,7 @@
 					<value level="11">32302</value>
 					<value level="12">36075</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3840,7 +3840,7 @@
 					<value level="11">30232</value>
 					<value level="12">33780</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/05000-05099.xml

@@ -2817,7 +2817,7 @@
 					<value level="3">7306</value>
 					<value level="4">8602</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="PhysicalMute" />
 		</effects>
@@ -2916,15 +2916,13 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>6335</power>
-				<chance>15</chance>
+				<chanceBoost>150</chanceBoost>
 			</effect>
 			<effect name="Speed">
 				<amount>40</amount>
 				<mode>DIFF</mode>
 			</effect>
 		</effects>
-		<selfEffects>
-		</selfEffects>
 	</skill>
 	<skill id="5085" toLevel="1" name="Anesthesia">
 		<!-- Confirmed CT2.5 -->

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/05100-05199.xml

@@ -1309,7 +1309,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>39544</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/06000-06099.xml

@@ -1861,7 +1861,7 @@
 					<value level="12">6844</value>
 					<value level="13">6960</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/08500-08599.xml

@@ -1536,10 +1536,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/10500-10599.xml

@@ -494,7 +494,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>30</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -516,7 +516,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>30</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -610,7 +610,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>15</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -632,7 +632,7 @@
 					<value fromLevel="7" toLevel="11" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>15</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -739,7 +739,7 @@
 				<criticalChance>20</criticalChance>
 				<abnormalType>BLEEDING</abnormalType>
 				<abnormalPower>4130</abnormalPower>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -762,8 +762,8 @@
 				</power>
 				<criticalChance>20</criticalChance>
 				<abnormalType>BLEEDING</abnormalType>
-				<abnormalPower>4130</abnormalPower>
+				<abnormalPower>4130</abnormalPower> <!-- TODO: Must have different values per level. -->
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -838,7 +838,7 @@
 					<value fromLevel="3" toLevel="7" fromSubLevel="1001" toSubLevel="1030">{base + base / 100 * subIndex}</value>
 				</power>
 				<criticalChance>20</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pveEffects>
@@ -856,7 +856,7 @@
 					<value fromLevel="3" toLevel="7" fromSubLevel="2001" toSubLevel="2030">{base + base / 100 * (5 + subIndex)}</value>
 				</power>
 				<criticalChance>20</criticalChance>
-				<chance>36.5</chance>
+				<chanceBoost>365</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 		</pvpEffects>
@@ -2928,7 +2928,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>8875</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3116,7 +3116,7 @@
 					<value level="6">27993</value>
 					<value level="7">29472</value>
 				</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Speed">
 				<amount>-23</amount>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/10700-10799.xml

@@ -337,11 +337,12 @@
 				<allowedSkills>10279;10517;10025;10776;11770;1904;11264;11093;13314;1912</allowedSkills>
 			</effect>
 			<effect name="FatalBlow">
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>8875</power>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/11300-11399.xml

@@ -3787,7 +3787,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<!-- Guessed -->
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>
 					<value level="1">45696</value>
 					<value level="2">47772</value>
@@ -3795,7 +3795,7 @@
 				</power>
 			</effect>
 			<effect name="Lethal">
-				<!-- Guessed -->
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>
@@ -3821,7 +3821,7 @@
 		<effects>
 			<effect name="FatalBlow">
 				<!-- Guessed -->
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<power>
 					<value level="1">51411</value>
 					<value level="2">53747</value>
@@ -3829,7 +3829,7 @@
 				</power>
 			</effect>
 			<effect name="Lethal">
-				<!-- Guessed -->
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/14200-14299.xml

@@ -2857,7 +2857,7 @@
 					<value level="6">5029</value>
 					<value level="7">5479</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="DamOverTime">
 				<power>100</power>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/14500-14599.xml

@@ -2872,9 +2872,10 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>7127</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 			<effect name="DispelBySlot">

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/14600-14699.xml

@@ -2238,9 +2238,10 @@
 		<effects>
 			<effect name="FatalBlow">
 				<power>1700</power>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/14900-14999.xml

@@ -1546,7 +1546,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>3000</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -1674,7 +1674,7 @@
 			</effect>
 			<effect name="FatalBlow">
 				<power>3000</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/20000-20099.xml

@@ -64,7 +64,7 @@
 			<effect name="FatalBlow">
 				<power>3420</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_3.0_Helios/dist/game/data/xsd/skills.xsd

@@ -866,6 +866,7 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
+															<xs:element name="chanceBoost" type="xs:unsignedShort" />
 															<xs:element name="dispel">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -931,8 +932,8 @@
 																</xs:complexType>
 															</xs:element>
 															<xs:element name="weaponType">
-																<xs:complexType mixed="true">
+																<xs:complexType>
-																	<xs:sequence minOccurs="0">
+																	<xs:sequence>
 																		<xs:element minOccurs="0" name="weaponType">
 																			<xs:complexType>
 																				<xs:sequence>
@@ -1194,6 +1195,21 @@
 																</xs:complexType>
 															</xs:element>
 															<xs:element name="side" type="xs:string" />
+															<xs:element name="fullLethal">
+																<xs:complexType mixed="true">
+																	<xs:sequence minOccurs="0">
+																		<xs:element maxOccurs="unbounded" name="value">
+																			<xs:complexType>
+																				<xs:simpleContent>
+																					<xs:extension base="xs:unsignedByte">
+																						<xs:attribute name="level" type="xs:unsignedByte" use="required" />
+																					</xs:extension>
+																				</xs:simpleContent>
+																			</xs:complexType>
+																		</xs:element>
+																	</xs:sequence>
+																</xs:complexType>
+															</xs:element>
 															<xs:element name="PARALYZE">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -1535,21 +1551,6 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
-															<xs:element name="fullLethal">
-																<xs:complexType mixed="true">
-																	<xs:sequence minOccurs="0">
-																		<xs:element maxOccurs="unbounded" name="value">
-																			<xs:complexType>
-																				<xs:simpleContent>
-																					<xs:extension base="xs:unsignedByte">
-																						<xs:attribute name="level" type="xs:unsignedByte" use="required" />
-																					</xs:extension>
-																				</xs:simpleContent>
-																			</xs:complexType>
-																		</xs:element>
-																	</xs:sequence>
-																</xs:complexType>
-															</xs:element>
 															<xs:element name="itemId">
 																<xs:complexType mixed="true">
 																	<xs:sequence minOccurs="0">
@@ -2105,6 +2106,7 @@
 																	</xs:sequence>
 																</xs:complexType>
 															</xs:element>
+															<xs:element name="pAtkMod" type="xs:unsignedByte" />
 															<xs:element name="isSummonSpawn" type="xs:boolean" />
 															<xs:element name="randomOffset" type="xs:unsignedByte" />
 															<xs:element name="HATE">
@@ -2140,7 +2142,6 @@
 															<xs:element name="debuffModifier" type="xs:decimal" />
 															<xs:element name="damageModifier" type="xs:decimal" />
 															<xs:element name="animationSpeed" type="xs:unsignedShort" />
-															<xs:element name="pAtkMod" type="xs:unsignedByte" />
 														</xs:choice>
 													</xs:sequence>
 													<xs:attribute name="name" type="xs:string" use="required" />
@@ -2502,22 +2503,6 @@
 								<xs:element name="effect">
 									<xs:complexType>
 										<xs:sequence>
-											<xs:element minOccurs="0" name="amount">
-												<xs:complexType>
-													<xs:sequence>
-														<xs:element maxOccurs="unbounded" name="value">
-															<xs:complexType>
-																<xs:simpleContent>
-																	<xs:extension base="xs:unsignedByte">
-																		<xs:attribute name="level" type="xs:unsignedByte" use="required" />
-																	</xs:extension>
-																</xs:simpleContent>
-															</xs:complexType>
-														</xs:element>
-													</xs:sequence>
-												</xs:complexType>
-											</xs:element>
-											<xs:element minOccurs="0" name="attribute" type="xs:string" />
 											<xs:element minOccurs="0" name="ON_MAGIC_SKILL" />
 											<xs:element minOccurs="0" name="ON_CRITICAL_SKILL" />
 											<xs:element minOccurs="0" name="ON_EQUIP" />
@@ -2645,7 +2630,7 @@
 														<xs:element minOccurs="0" name="criticalChance" type="xs:unsignedByte" />
 														<xs:element minOccurs="0" name="abnormalType" type="xs:string" />
 														<xs:element minOccurs="0" name="abnormalPower" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="chance" type="xs:decimal" />
+														<xs:element minOccurs="0" name="chanceBoost" type="xs:unsignedShort" />
 														<xs:element minOccurs="0" name="overHit" type="xs:boolean" />
 														<xs:element minOccurs="0" name="ticks" type="xs:unsignedByte" />
 													</xs:sequence>
@@ -2666,6 +2651,8 @@
 												<xs:complexType>
 													<xs:sequence>
 														<xs:element minOccurs="0" name="fullLethal" type="xs:unsignedByte" />
+														<xs:element minOccurs="0" name="chance" type="xs:unsignedByte" />
+														<xs:element minOccurs="0" name="staticChance" type="xs:boolean" />
 														<xs:element minOccurs="0" name="magicTypes" type="xs:string" />
 														<xs:element minOccurs="0" name="skillId" type="xs:unsignedShort" />
 														<xs:element minOccurs="0" name="skillLevel" type="xs:unsignedByte" />
@@ -2693,8 +2680,7 @@
 														<xs:element minOccurs="0" name="criticalChance" type="xs:unsignedByte" />
 														<xs:element minOccurs="0" name="abnormalType" type="xs:string" />
 														<xs:element minOccurs="0" name="abnormalPower" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="chance" type="xs:decimal" />
+														<xs:element minOccurs="0" name="chanceBoost" type="xs:unsignedShort" />
-														<xs:element minOccurs="0" name="staticChance" type="xs:boolean" />
 														<xs:element minOccurs="0" name="overHit" type="xs:boolean" />
 														<xs:element minOccurs="0" name="ticks" type="xs:unsignedByte" />
 													</xs:sequence>

L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/stats/Formulas.java

@@ -36,6 +36,7 @@ import com.l2jmobius.gameserver.model.actor.instance.L2StaticObjectInstance;
 import com.l2jmobius.gameserver.model.cubic.CubicInstance;
 import com.l2jmobius.gameserver.model.effects.EffectFlag;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
+import com.l2jmobius.gameserver.model.interfaces.ILocational;
 import com.l2jmobius.gameserver.model.items.L2Armor;
 import com.l2jmobius.gameserver.model.items.L2Item;
 import com.l2jmobius.gameserver.model.items.L2Weapon;
@@ -264,6 +265,37 @@ public final class Formulas
 		return finalRate > Rnd.get(1000);
 	}
 	
+	/**
+	 * Gets the default (10% for side, 30% for back) positional critical rate bonus and multiplies it by any buffs that give positional critical rate bonus.
+	 * @param activeChar the attacker.
+	 * @param target the target.
+	 * @return a multiplier representing the positional critical rate bonus. Autoattacks for example get this bonus on top of the already capped critical rate of 500.
+	 */
+	public static double calcCriticalPositionBonus(L2Character activeChar, L2Character target)
+	{
+		// final Position position = activeChar.getStat().has(Stats.ATTACK_BEHIND) ? Position.BACK : Position.getPosition(activeChar, target);
+		switch (Position.getPosition(activeChar, target))
+		{
+			case SIDE: // 10% Critical Chance bonus when attacking from side.
+			{
+				return 1.1 * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.SIDE);
+			}
+			case BACK: // 30% Critical Chance bonus when attacking from back.
+			{
+				return 1.3 * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.BACK);
+			}
+			default: // No Critical Chance bonus when attacking from front.
+			{
+				return activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, Position.FRONT);
+			}
+		}
+	}
+	
+	public static double calcCriticalHeightBonus(ILocational from, ILocational target)
+	{
+		return ((((CommonUtil.constrain(from.getZ() - target.getZ(), -25, 25) * 4) / 5) + 10) / 100) + 1;
+	}
+	
 	/**
 	 * @param attacker
 	 * @param target
@@ -1018,21 +1050,37 @@ public final class Formulas
 		return cha.getStat().getValue(Stats.FALL, (fallHeight * cha.getMaxHp()) / 1000.0);
 	}
 	
-	public static boolean calcBlowSuccess(L2Character activeChar, L2Character target, Skill skill, double blowChance)
+	/**
+	 * Basic chance formula:<br>
+	 * <ul>
+	 * <li>chance = weapon_critical * dex_bonus * crit_height_bonus * crit_pos_bonus * effect_bonus * fatal_blow_rate</li>
+	 * <li>weapon_critical = (12 for daggers)</li>
+	 * <li>dex_bonus = dex modifier bonus for current dex (Seems unused in GOD, so its not used in formula).</li>
+	 * <li>crit_height_bonus = (z_diff * 4 / 5 + 10) / 100 + 1 or alternatively (z_diff * 0.008) + 1.1. Be aware of z_diff constraint of -25 to 25.</li>
+	 * <li>crit_pos_bonus = crit_pos(front = 1, side = 1.1, back = 1.3) * p_critical_rate_position_bonus</li>
+	 * <li>effect_bonus = (p2 + 100) / 100, p2 - 2nd param of effect. Blow chance of effect.</li>
+	 * </ul>
+	 * Chance cannot be higher than 80%.
+	 * @param activeChar
+	 * @param target
+	 * @param skill
+	 * @param chanceBoost
+	 * @return
+	 */
+	public static boolean calcBlowSuccess(L2Character activeChar, L2Character target, Skill skill, double chanceBoost)
 	{
-		final double weaponCritical = 12; // Dagger weapon critical mod is 12... TODO: Make it work for other weapons.
+		final L2Weapon weapon = activeChar.getActiveWeaponItem();
+		final double weaponCritical = weapon != null ? weapon.getStats(Stats.CRITICAL_RATE, activeChar.getTemplate().getBaseCritRate()) : activeChar.getTemplate().getBaseCritRate();
 		// double dexBonus = BaseStats.DEX.calcBonus(activeChar); Not used in GOD
-		final double critHeightBonus = ((((CommonUtil.constrain(activeChar.getZ() - target.getZ(), -25, 25) * 4) / 5) + 10) / 100) + 1;
+		final double critHeightBonus = calcCriticalHeightBonus(activeChar, target);
-		final Position position = Position.getPosition(activeChar, target);
+		final double criticalPosition = calcCriticalPositionBonus(activeChar, target); // 30% chance from back, 10% chance from side. Include buffs that give positional crit rate.
-		final double criticalPosition = position == Position.BACK ? 1.3 : position == Position.SIDE ? 1.1 : 1; // 30% chance from back, 10% chance from side.
+		final double chanceBoostMod = (100 + chanceBoost) / 100;
-		final double criticalPositionMod = criticalPosition * activeChar.getStat().getPositionTypeValue(Stats.CRITICAL_RATE, position);
 		final double blowRateMod = activeChar.getStat().getValue(Stats.BLOW_RATE, 1);
-		blowChance = (weaponCritical + blowChance) * 10;
 		
-		final double rate = blowChance * critHeightBonus * criticalPositionMod * blowRateMod;
+		final double rate = criticalPosition * critHeightBonus * weaponCritical * chanceBoostMod * blowRateMod;
 		
 		// Blow rate is capped at 80%
-		return Rnd.get(1000) < Math.min(rate, 800);
+		return Rnd.get(100) < Math.min(rate, 80);
 	}
 	
 	public static List<BuffInfo> calcCancelStealEffects(L2Character activeChar, L2Character target, Skill skill, DispelSlotType slot, int rate, int max)

L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/Backstab.java

@@ -33,14 +33,14 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class Backstab extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
 	private final boolean _overHit;
 	
 	public Backstab(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
 		_overHit = params.getBoolean("overHit", false);
 	}
@@ -48,7 +48,7 @@ public final class Backstab extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !effector.isInFrontOf(effected) && !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/FatalBlow.java

@@ -22,7 +22,6 @@ import java.util.Set;
 
 import com.l2jmobius.gameserver.enums.ShotType;
 import com.l2jmobius.gameserver.model.StatsSet;
-import com.l2jmobius.gameserver.model.actor.L2Attackable;
 import com.l2jmobius.gameserver.model.actor.L2Character;
 import com.l2jmobius.gameserver.model.effects.AbstractEffect;
 import com.l2jmobius.gameserver.model.effects.L2EffectType;
@@ -38,27 +37,24 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class FatalBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final double _criticalChance;
-	private final boolean _overHit;
-	
 	private final Set<AbnormalType> _abnormals;
 	private final double _abnormalPower;
 	
 	public FatalBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_criticalChance = params.getDouble("criticalChance", 0);
-		_overHit = params.getBoolean("overHit", false);
 		
-		final String abnormals = params.getString("abnormalType", null);
+		String abnormals = params.getString("abnormalType", null);
 		if ((abnormals != null) && !abnormals.isEmpty())
 		{
 			_abnormals = new HashSet<>();
 			for (String slot : abnormals.split(";"))
 			{
-				_abnormals.add(AbnormalType.getAbnormalType(slot));
+				_abnormals.add(Enum.valueOf(AbnormalType.class, slot));
 			}
 		}
 		else
@@ -71,7 +67,7 @@ public final class FatalBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override
@@ -94,11 +90,6 @@ public final class FatalBlow extends AbstractEffect
 			return;
 		}
 		
-		if (_overHit && effected.isAttackable())
-		{
-			((L2Attackable) effected).overhitEnabled(true);
-		}
-		
 		double power = _power;
 		
 		// Check if we apply an abnormal modifier

L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/SoulBlow.java

@@ -33,13 +33,13 @@ import com.l2jmobius.gameserver.model.stats.Formulas;
 public final class SoulBlow extends AbstractEffect
 {
 	private final double _power;
-	private final double _chance;
+	private final double _chanceBoost;
 	private final boolean _overHit;
 	
 	public SoulBlow(StatsSet params)
 	{
-		_power = params.getDouble("power", 0);
+		_power = params.getDouble("power");
-		_chance = params.getDouble("chance", 0);
+		_chanceBoost = params.getDouble("chanceBoost");
 		_overHit = params.getBoolean("overHit", false);
 	}
 	
@@ -52,7 +52,7 @@ public final class SoulBlow extends AbstractEffect
 	@Override
 	public boolean calcSuccess(L2Character effector, L2Character effected, Skill skill)
 	{
-		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chance);
+		return !Formulas.calcPhysicalSkillEvasion(effector, effected, skill) && Formulas.calcBlowSuccess(effector, effected, skill, _chanceBoost);
 	}
 	
 	@Override

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00000-00099.xml

@@ -1784,7 +1784,7 @@
 					<value level="24">977</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -3290,7 +3290,7 @@
 					<value level="36">15</value>
 					<value level="37">15</value>
 				</criticalChance>
-				<chance>40</chance>
+				<chanceBoost>400</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00200-00299.xml

@@ -4554,9 +4554,10 @@
 					<value level="37">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00300-00399.xml

@@ -1079,12 +1079,13 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Bluff">
 				<chance>80</chance>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>
@@ -1715,10 +1716,11 @@
 			<effect name="FatalBlow">
 				<power>5773</power>
 				<criticalChance>20</criticalChance>
-				<chance>30</chance>
+				<chanceBoost>300</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>15</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00400-00499.xml

@@ -1210,9 +1210,10 @@
 					<value level="10">3653</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>25</chance>
+				<chanceBoost>250</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>5</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00500-00599.xml

@@ -525,7 +525,7 @@
 					<value level="28">5479</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4201,9 +4201,10 @@
 					<value level="4">5199</value>
 				</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00600-00699.xml

@@ -2634,9 +2634,10 @@
 			<effect name="FatalBlow">
 				<power>6969</power>
 				<overHit>true</overHit>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 			<effect name="Lethal">
+				<fullLethal>0</fullLethal>
 				<halfLethal>10</halfLethal>
 			</effect>
 		</effects>

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/00900-00999.xml

@@ -1604,7 +1604,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/01500-01599.xml

@@ -3668,7 +3668,7 @@
 			<effect name="FatalBlow">
 				<power>11234</power>
 				<criticalChance>30</criticalChance>
-				<chance>60</chance>
+				<chanceBoost>600</chanceBoost>
 				<overHit>true</overHit>
 			</effect>
 			<effect name="Lethal">

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/04000-04099.xml

@@ -2431,7 +2431,7 @@
 					<value level="11">7461</value>
 					<value level="12">7850</value>
 				</power>
-				<chance>20</chance>
+				<chanceBoost>200</chanceBoost>
 			</effect>
 		</effects>
 	</skill>

L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/04100-04199.xml

@@ -3417,7 +3417,7 @@
 					<value level="11">44350</value>
 					<value level="12">49193</value>
 				</power>
-				<chance>115</chance>
+				<chanceBoost>1150</chanceBoost>
 			</effect>
 		</effects>
 	</skill>
@@ -4046,7 +4046,7 @@
 					<value level="11">73917</value>
 					<value level="12">81989</value>
 				</power>
-				<chance>67</chance>
+				<chanceBoost>670</chanceBoost>
 			</effect>
 		</effects>
 	</skill>