Begin the game, then start a new level by either using the 'Mission Selection' option or starting a new game. Save the 'config.cfg' file, then Right Click it, select 'Properties', and set it to 'Read Only'. For example, adding the following line will bind the 'God mode' cheat to the 'U' key: You can now further modify the file by binding any of the following cheat codes to an unused key. Add the following line to the end of the file: Use a text editor to edit the 'config.cfg' file in the 'players' directory in the game folder. Note: This procedure involves editing a game file create a backup copy of the file before proceeding.