yea i tried it on easy and no luck..
force powers that i can use on him are
Fear
Scream
Wound
I use adrenalin, and all sorts of Buffs to the point i have 7 little arrows... I can hurt him very badly but he just seems to heal himself over and over and by then he kills me because im out of goodies. I guess i'm stuck and i may have to start over I wish there was a reverse button.