Vorbos:
Chertuba has second key. In order to make it even more difficult to find, he gave it to his Incarnation.
As you kill the Orcs, you will see Chertuba Mirage or Chertuba Illusion. As you kill Chertuba Mirage or Chertuba Illusion, you will be able to get your hands on second key.
They can be quite strong, but help me!
"Yes, yes."