Originally Posted by kuyaBaka
As far as I know, nope.
I stumbled upon this on accident. I meant to fight Diablo on Normal mode for the "Punch Diablo" achievement really quick and ended up punching Inferno-mode Diablo. The rest of my group was like "wtf?" and they left me.
Aw, I guess I'll have to wait for 1.0.3 before I go farm nuts. I'm too lazy to fight past snakes.