I found a bug in arena (v0.2.09.3). As you encounter the first everything goes as normal, but after defeating him, other two encounter doesnt do anything. Just do nothing. Seducing and presenting didnt do anything too. While i was completing the arena, i was wearing indestructible shield, chastity belt and cage (maybe AI bugged because of them). Bug comes like 2 times at 3 tries.
The other bug is with Blitz stance. I cant learn overrun and assault in the game, so i cant attack and do anything(do nothing). Save file from previous versions of the game with "assault" fix it, but still you cant learn it in the game.
And my thought about quetzaal: she is nothing, cant kill a hero in whatever scenario (if only you shitmage or ranger without bows and normal weapon). Hitting face is still the easiest way to defeat enemy, even without any special stats or abilities.