Drown in Blood - Insanely Difficult Doom WAD

Here is a coop based Skulltag WAD thats sole purpose is to throw as many demons at you as possible. The game is by far one of the hardest WADS to play solo. The atmosphere is also quite exceptional with a great degree of variety. If you want a challenge, play this. The custom weapons are from an additional WAD called EWEPS. If you play solo, you will probably need this WAD.