I'm playing on Casual, my warrior is level 30 and I have tried about 30 times by now and can't kill the lazy bastard! I have apple juice and Hirge with Circle of Restoration scrolls and max healing skill. I almost get him but he goes Rage or whatever and kills me in 2-3 blows. It looks like I've got to grind a few more levels (paiiin) or retrain just for that monster (not fun).
Ps: 1) he often paralyzes me while i have my spirit resistance at around 140 wtf, 2) at his rate of damage there seem to be no point in boosting my armor much further (depending on my gear it's 50-60 points) so my only option is boost my damage. I use adamantium sword (banishing!). Also my hp is at 600 and I'd need A LOT more for juice and CoR scrolls to work better. I'm just out of ideas at this stage.
My build below