Best Thing to Do is Use 2x Dwarf Star and Rising Sun Ammulet Or Have a Paladin with Salavation Help u out for resis
I beat him alone with my Paladin with Rising Sun Ammy but he has Max Resis 90+ with Gaurdian Angel. And with Schaffers Static it wasnt as hard. So Goodluck hes an experience good addiction to the game I think.