I did and he never moved off his alter, so basically good food, fire resist, frostner /padded/black iron round shield and his health felt really low or he is extra vulnerable to the weapon. Just a bit of in and out, run behind a stone to regen stam, block his razorbeam, back in, get hit by meteor use healing potion. Interestingly his ray can be blocked. He is slow enough that you can circle him and get some backstab hits.