The tweaks_and_cheats.zip file you have requested: Utilities / Tweaks and Cheats - 35.57kb is not available. Perhaps try browsing all files for the game Doom III and upload any files you want to share or are missing. This is the only information we could locate:
This is for those with low end systems and/or those who doesn't like to play fair. ;) It tweaks some settings so the game will run smoother and binds keys to cheats like GodMode.