I've tried every damn thing I can think of, including laying in two dozen firewalls for him to walk through as he comes at me. Once Diablo gets pissed enough to close with me, I'm screwed.
So I go online and look up stratgies that will work. I've tried every tip I could find except one: Run that same character through a new game to build up the character's power level. And all I can think is, are they kidding me? Do I really have to do 16 levels all over again just to finish the game?