Production of the project has been going for a long time since sometime around 2007. I worked on it as an on/off project. I did a Doom 2 compile attempt about 5 year's ago, been trying to make Doom 1/2 mods that compile levels for each game.
This is all of episode 1 of Doom 1 compiled, recommended use in Zdemon or something similar.
This hasn't been properly tested in the old Doom.exe since the old Doom.exe isn't compatible with my PC but is had worked with Zdoom and Zandronum for me, similar engine's. Also the project is built using the Doom Builder 2 engine. If you want to use the file then you will need WinRar so you can extract the wad, I was going to post as Wad but Moddb doesn't allow Wad file's to be posted for some odd reason so I uploaded as a RAR file.