Quote Originally Posted by gwdownunder View Post
The quest to unlock the next levels are insanity. I’ve been at it for hours upon hours after I capped and I’m only at 44/100 on the arrow quest!
Each time you kill Ayz you get credit for the quest. No other monsters give you credit for this quest.

The same can be said for the 'Wav' and 'Vox' quests that follow: only the specific boss monster will give credit.