Heh, the quest to search the slaves cells and then kill the assassin boss has an interesting balance. First time I tried it in NM, I had druid/hunter-combo with almost no healing skills and now druid/ranger-combo with
tree of life and
purification.
First time around, the assassin was the complete nightmare. The arena slaves were hard, but not beyond infuriating like during my second run. (Healer slaves! I'm gonna tear your heads off and kick them to the moon!) But then the assassin was a laugh. Yayswords is definitely right,
purification does "roflstomp" him.
Anyways, not saying that this would need any tweaks on NM, just another note on how the different builds change the experience.
and also I need to look at things in perspective: if a very small % of people complain about too easy/hard is one thing, if instead is a big % means that probably I should take action. I once looked at the forums of some AAA games (Company of Heroes, EQ2, etc) on Steam and there were a gazillion thread like "aspect XZY of the game is broken/unbalanced"! 
