This is a very simple Win32 port of original Doom. It's main features are high resolution screen modes (up to 1024), score keeping and some sort of multiplayer.
Download a self-unpacking port archive and copy it to the game's directory. Run the file ('WD2001.EXE') so it unpacks its files to the same directory.
Start 'FRONTEND.EXE'. Select 'Video Mode' and click 'Run windoom' to start the game. Somewhy all of the Video modes higher than '640 x 480' did not work in my case.
There are no graphical extensions in this Source Port.