Counter-Strike: Condition Zero

You may have to type "sv_cheats 1" in console first and tipe restart
and hit enter. The following commands are available in console:

god - invincibility
Impluse 101 - Give D-Eagle, AVP, AK-47 and MP5..
Noclip - No clip mode
fly - fly mode

Access the console by pressing [`] and then enter the following:
bot_kill - kills all bots allowing you to win if the bomb is not planted
restart - to restart the map without losing any goals

All Condition Zero: Deleted Scenes
Bring down the console by pressing [`] and enter "cl_levellocks 16382"

Unpatriotic Suicide:
In the Deleted Scenes level, "Alamo" shoot the U.S. flag that is on
top of the emabassy and you will automatically die.