Namo:
I may have exaggerated a bit, but what you have to do is very simple. Dispose of the dragons and Undead in the south to get an idea of what's going on.
We can get an idea of the situation by slaying 100 Prey Drake, Beast Drake, Dust Drake, Vampiric Drake, Bloody Grave Warrior, Dark Grave Warrior, Dark Grave Wizard, Dark Grave Knight, and Gust Spiral.