STALKER in DOOM 2,Gaming,stalker doom,stalker,doom,DOOM 2,emulator,doom emulator,mod,doom mod,stalker mods,The STALKER itself (has a readme, but it's in russian) : https://goo.gl/QMAEWR
Use emulator called Zandronum.
For it to work you should either download FREEDOOM, or pay 10$ for normal DOOM 2.