Added the Super Shotgun and completed the roster of monsters that mappers still make masterpieces with to this day.

Doom II's mapset is a bit more gimmicky that Doom's, but the quality feels a lot more consistent throughout vs a lot of it being frontloaded like in the first game. The combat dance is one of the most satisfying you'll find in shooters from that time, so much so that the engine's still being used to this day.