Had my first look at the Master on this Insane run and took note that he had Berserker skills along with his normal assortment of annoying tendencies. However the full impact of the berserker skill set didn't occur to me until I came back at him after the first hit and run. He was back at full health! He had received Fast Metabolism and was passively regenerating at 19.5 health per turn
Here is my character dump -
http://te4.org/characters/30723/tome/4f ... 0769fe87a0
I plan on going back and doing everything in the East I have missed to this point and putting points in Curses (specifically Curse of Death) to give myself any change of getting past him.
Any other advice?