Recently i was informed of a glitch in VOG. You have to have two, pretty high level sun singer warlocks. The other of the three can be anything. But when you face the boss, both warlocks use their super at the same time and they both start throwing grenades around the boss eventually driving him into a corner. ( the boss will try to avoid the grenades by moving away) once you drive him into a corner, you keep throwing nades around him and eventually with enough grenades surrounding him he cannot run away, and will FALL OFF THE MAP...this is a very quick and easy way to beat VOG.