Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. With a text editor, edit the "Main.ini" file in the game directory. Search under the [GAME] heading for the following line:
DEBUGMODE = 0
and change it to...
DEBUGMODE = 1
Press SHIFT + ~ during game play to display the console window. Enter g_cheats 1 to enable cheat mode. Enter "I" to enable God mode.