Once again, I completed that game... and man was the game frustrating at the end.
I used the mod to complete the game, but it makes the game unfairly hard in some cases. Example: Hell Knights, almost never die, you use so much ammo against them... now imagine having to take on three of them, and have closed spaces, only needing one shot from them.
Sarge also didn't feel like dying either. 400 Plasma Cells, + 10 Rockets and a few Shotgun Shells finally took him down.... oh, and there is no Soul Cube, so no imagine how long the Cyber Demon took.
Anyways... it was great playing the game again, but now it is quits for a long while.