Doom was one of the original first person shooters to drive gamers wild, but it hasn’t held up well over the years. Specifically, the weapons became outdated as games like Halo and Modern Warfare changed the face of first person shooters forever. However, thanks to a recent mod, Doom now sports Modern Warfare 2 weapons, sound effects, and even the ability to quickly strike with your trusty combat knife. If you want to relive your Doom days, but can’t give up the guns of MW2, then download this mod.