Operation Flashpoint: Cold War Crisis Cheats

Hold [Left Shift] and press [Keypad Minus] at the indicated screen. Release the keys, then type one of the following codes to activate the corresponding cheat function:
Result
Screen
Cheat Code
All missions unlocked Main menu campaign
Saves game During game savegame
End current mission During game endmission
Unknown During game topography

During game-play simultaneously hold 'Left', 'Shift' and 'Keypad Minus' on the main menu, then elease them then enter the following codes
God Mode: iwillbetheone
All Missions Unlocked: campaign
Show Map Elevations: topography
Creates Saved State: savegame

Ends Current Mission: endmission

Christmas:
Enter the date 'December 25th and all the pine trees will be decorated and have presents under them.

Before the end of the level, just when the helicopter
picks you up, wait about five seconds. Then, go to your action
menu by pressing ] or [ and select "Eject".
Press [Enter] and your character will parachute out of
the helicopter. When he lands, you can continue the game and not
get killed.

Hold [Left Shift] and press [Keypad Minus] at the indicated screen. Release the keys, then type one of the following codes to activate the corresponding cheat function.

Code Result
savegame Saves Game (Gameplay Screen)
endmission End Mission (Gameplay Screen)
campaign Unlock Levels (Main Menu)
topography Unknown Effect (Gameplay Screen)
Iwillbetheone God Mode


Infinite Save Games
If you need to save more than once in a mission, then you need to delete the old save game file. It can be found in the directory Users\SavedCampaigns1985. ALT-TAB out of the game, make a backup copy (trust me!) and then delete the save file. ALT-TAB back and press ESC to pause the game. You should now be able to save the game again. You can do this as many times as you like.

Full Ammo
On the second level on campaign mode when your officer shouts go go go! Immediately type in moreammo and you will get full ammo.

Unlimited Ammo (Hex Method)
BACKUP FILES BEFORE PROCEEDING!

To alter the amount of ammo available to each weapon or magazine simply edit the weapons.cfg file found in the 'saved' folder contained within your user folder.

..UsersNAMESavedCampaigns1985
or
..UsersNAMESavedMissions1TakeTheCar

* Save a back-up copy prior to changing !!!

The weapons.cfg file defines weapon classes where u can change the ammo amounts.

class Magazine3
{
type="M16";
ammo=30.000000;
reload=0.133733;
id=352.000000;
};
class Magazine4
{
type="HandGrenade";
ammo=1.000000;
reload=1.215374;
id=353.000000;
};

Once changed you will need to re-start your mission or continue your campaign for the changes to take effect. These changes are often reset at the beginning of new missions/campaings requiring you to alter the new cfg file for that particular mission.

Bonus Level
After you beat the gamem watch through all the credits and let it go through all the loading screens. After the credits are over it will start a scene with the black ops guy talking on the phone to Dave (Armstrong, the inf. guy) After the scene you get to fly a Cessna into the Everon airport and pick up all the other characters that you got to play and take them to a pub.

Set the system date to December 25 and start the game. All of the pine trees will be covered with decorations and have presents under them.
Information in this section was contributed by Nick Schlagheck.