VIDEO: Player conquers Doom's Ultra-Nightmare mode without upgrades

A player by the name of Zero Master managed to beat Doom on its hardest difficulty just two days after it came out. Now he’s back with another impressive feat where he beats the game on Ultra-Nightmare without using any upgrades.

Ultra-Nightmare is a permadeath version of the game’s Nightmare difficulty, meaning you either win or you have to start from scratch. The lack of upgrades also makes Zero Master’s character quite fragile, especially as he faces off against some big baddies.

The first upgrade is mandatory, so he takes an ammo capacity upgrade, but otherwise he can’t upgrade weapons, touch perk-granting runes, use Praetor suit upgrades, or take advantage of permanent boosts to health or armour capacity.