Well, it all depends on his THAC0...
Perhaps he scattered D4's randomly about his floor (we all know how much those buggers hurt when you step on them, right?)
Then he probably got all his geek friends to set traps for him, so fiendishly cunning that only his geekiness could save him. That way he'd be pitched against all his geek friends and either die by geek attack or come through it all as the top geek, therefore no longer having to kill himself. After all, if you're going to be a geek, you might as well be the best one.
As for the scattered D4's, I dunno... maybe he just likes that kind of pain?