Ok so you have free reign on what happens to Hades I just ask that you don't kill him. :P

Two angles you could play it from really: 

Hades is hellbent on killing you, could make for a more intense fight.
Or the complete opposite, he's trying to resist the spell still, so he could be deliberately fighting poorly, albeit convincingly.

After your post we'll end the necromancer section and be a few posts away from their big break. ^_^