To enable cheats in Call of Duty you must edit the target line of the shortcut.
 Add the following at the end of the line:

 +set monkeytoy 0 +set sv_cheats 1

 Now during gameplay press [~] to bring up the console and enter the following
 codes:

 set random sv_cheats 1         Activate cheat mode

 give                           Gives the listed
 give health                    Gives full health
 god                            God mode
 notarget                       The enemies won't shoot you
 noclip                         Walk through walls
 give all                       All weapons and ammo