Cheat Codes
You can enter cheat codes on the game's main menu. To access the codes, first type "nada" followed by the specific code. Entering the code "ALLGOD" allows you to play in "God" mode. The code "ALLAMMO" provides you with unlimited ammo. Entering "EASY" lowers the game's difficulty. The code "FEEDME" clears all enemies. The final code, "GETALLIWANT," clears all levels.
Mission Access
Pressing a combination of keyboard keys on the main menu can also grant access to all the game's mission. To activate the code, press the left "Ctrl," the left "Shift" and "F9" all at the same time. You'll now be able to pick whatever mission you want.
Skip Missions
While playing the game, press "Esc" to go to the main menu. Select "Controls" and then press "Print Screen." You'll automatically advance to the next mission. For an alternative method, press the left "Ctrl," the left "Shift" and "F12" simultaneously at any time during game play.
Unlimited Health
If you need an edge to survive some of the more difficult missions, you can also enter a code on the main menu to provide a significant health boost. To activate the code, press "Ctrl," "Alt" and "F9" all at the same time. You'll now have unlimited health when you start the game.
Disable Enemies
Since you're playing a PC game, you can edit game files to gain an advantage. Always create a backup copy of the folder before editing. Once you've made your copies, enter the "AI" folder and delete the "default.qvm" and "squaddefault.qvm" files. Copy and paste the "settings.qvm" file twice, renaming the copies "squaddefault.qvm" and "default.qvm." When you start the game, all enemies except tanks and helicopters will ignore you.
Maximum Ammo Capacity
You can also edit game files to gain maximum ammunition capacity. After copying all files, enter the "humanplayer" directory in the game folder. Open the "humanplayer.qvm" file in a text editor and search for the "DefineHumanPlayerAmmoLimit" heading. Change the "AMMO_ID_MAKAROVCLIP, 64" so it ends with "99" instead of "64." Do the same with any other "AMMO" definitions, changing the numbers to "99."