Than level up to level 5.
I had a pretty alright time, though I unintentionally cheesed the hag (when she turned into copy of Melina, I attacks what I think was the illusion using non-lethal strike - illusion dissapeared and unconcious status stransfered to Hag).
Larian needs to figure out a better way to tranfer in and out of combat. I had similar things happen myself.
