Operation Flashpoint: Red Hammer

Operation Flashpoint: Red Hammer cheat codes: 
While holding left shift push "-" (num pad) then leave them.
After that type:

savegame      - saves game during missions
endmission    - ends mission
topography    - Show elevations on map
campaign      - while in main menu (all missions)
iwillbetheone - Invincibility

Unlimated savegames:
Press L-Shift + Keypad minus and type "savegame" during gameplay.

Unlock all missions:
Press L-Shift + Keypad minus and type "campaign" on the main menu.

End mission cheat:
Press Escape while in a game. Press shift and minus at the
same time. Release them and type endmission.