This is Infernal Doom made V20 compatible, comes with a BDv19 or older version and various addons. This only works with loading it after original Brutal Doom versions because it is a stand alone mod (as of right now). It includes an Full-Auto Pistol, the Unmaker (not N64) and new health potions and packs. To use the Unmaker, press Alt-Fire to change what kind of ammo the weapon fires, you'll be in for a suprise for what this all has. Enjoy