IndustrialFist: Turns out if you cheat your health past level 99, your current/max goes to 0/0. You can't enter the menu again and when you attack, it soft locks the game. Fury just sticks mid pose. So long as you don't attack you can still jump and move, but any hit is a 1 hit death.

This is the real hardcore mode (or instant karma, take your pick).