The No One Lives Forever: The Operative cheat codes are available at this site. Although using them (as with all games) kinda kills the purpose of the entire game, the codes themselves contain some humor again. For instance, the code for invincibility (I'm your father) is a reference to Star Wars, as is the code for full ammo (We got death star). Also, the code to spawn a snowmobile, Rosebud, is a reference to the 1941 movie Citizen Kane. Also, Wonderbra, a very popular item during the 1990's, is used as the cheat code for full armor. Dr Dentz, the cheat code for full health, might be a reference to Theodore Dentz (page in Dutch), although this might very well be just coincidence.Finally, "Ass cam" is the cheat code for 3rd person view.