I just run up to him and kill him while he hits me for crap damage with his axe. The first time, I used storm chaser to run up the ramp which gave me an altitude advantage over him and thus my damage was better than his. The first time I had pet skills and necro sacrifice skills, now I use him to test out builds so I can see if it's be even remotely good. If my build can kill him, then I know it's got atleast a chance
