All cheats for this game by platform:
PC
Primary Collection of Cheats
Cheat Mode
Use Notepad to edit GameSettings.script file in InstallDir\ folder of the game folder.
set bool ConsoleEnabled = true;
Set this, and then, then in the game you'll be able to bring up the console and enter following cheats.
SetImmortalMode - God Mode
LoadFullAmmo - Full Ammo
SetUnlimitedAmmo - Unlimited Ammo
Alternative codes
Type them in the console if the above ones don't work.
fullammo - Full Ammo
immortal = true - Immortality
god_mode = true - God Mode
unlimited_ammo = true - Unlimited Ammo
enabled_missions = true - Unlock All Missions
You can also change everything by editing Helicopter.script file in InstallDir\Common\ folder of the game folder.