Invincibility
To enable this cheat find the 'autoexec.config' file in the game directory and create a backup copy of it before proceeding. Then using a text editor change the value of the 'PlayerTakeDamage' line from '1' to '0'. Note: the spotter is not invincible and can still be killed.
More tricks, tips and cheats for this game are right here - CTU: Marine Sharpshooter cheats
Comments for this cheat