Lol i retract that comment, finally beat it eventually. Just stay alive for a few more turns and eventually he dies. Really wish i could have the last 2 hours back though had i realized this sooner.
Completely useless. Got to the third level boss and everytime i attempt to kill him he stops at 1 health and becomes immune/unkillable. Searched everywhere on the internet and in game and nothing explains how to defeat the boss. I quit, what a waste of time.
You could check stategies on the book of chaos !