One more clue we have is that Kickasso levelled up and so did Complains, so it shouldn't be as easy as saying the right answer and leaving... (also that would be very anti climatic story).
I also don't think Kickasso would defy the angel, I think he played by the rules all the way (unlike Complains).
My guess is that failing to answer would result a death, followed by a resurrection by the angel, and a 2nd question,...
and maybe after few times it happens she will say something like "this is your last chance, I'm not going to resurrect you again!" and then he will finally get it right.
ps. I find I use the name Kickasso even though I feel like writing "Fumbles" and its *only* because he asked nicely not to use that name anymore... as if I would hurt his feelings if he read this post
As for Complains, I'm guessing that after failing a bunch of questions he got tired of dying and attempted to kill the angel, failing miserably but not before getting a part of her horn. I think the angel would find it "cute" that he thought he could do it. Still he had to answer correctly to leave the place.