The game is just bad.
The thing is that this is dos version and not Win/Mac pop2. The game runs bit fast for fast computers. In the dos pop2 were not sound for enemy spells and when smaller gods come to the map like the amiga/win/mac version has.
Well, i regret that i did not read others reviews about lack of mod support, terminal and the lan is disablet in this build. Tho this is doom 3 vanilla with extra ammo.