I defeated Meowarity with a friend. But I still have the quest for some reason saying I didn't defeat him. Then I figured maybe it had to do with the fact he could open the chests and I couldn't. But I was the one that started the quest first and he was in my group, and came in later. And then I figured I would simply do the quest again but when I got to the level with the wooden chests, I still can not open it. Also, I observed when I talked to that travis guy in the big ben, the first two times, I didn't get any experience either, just gold.