1st Attempt at fusing Doom1,2 together file

This is build that I had created was mainly to see what if I could combine Doom 1 and 2 into 1 game, doesn't work on the Doom engine but hasn't been tested on engines like Zandronum. Currently there is several previous builds that are more stable for multiplayer/co-op.

This current build seems stable for co-op but the game glitches a lot in multiplayer while less frequent in single player. (I may revert to previous builds due to these problems)