Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "AITakeDamage 1" entry to "AITakeDamage 99".
God mode
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "PlayerTakeDamage 1" entry to "PlayerTakeDamage 0".
Invincible enemies
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "AITakeDamage 1" entry to "AITakeDamage 0".
No clipping
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "PlayerClip 0" entry to "PlayerClip 1".
Enemies take more damage...