CHEETS

Press ~ to access the console, then enter the following:

give_all_weapons=1 All Weapons
give_all_ammo=1 Ammunition
god_mode_count=1 God Mode

Cheat-code [ENG]
First off, download the cheat enabler listed above and unpack the DevMode.lua
file to the main FarCry directory overwritting other file (make a backup of
it!).

Now start the game by adding the '-devmode' parameter and you'll be able to use
the following hotkeys while in the game and also all levels will be unlocked:

[F4] - Toggle No Clip Mode
[F2] - Move to Next Checkpoint
[F9] - Save Current Position
[F10] - Load Current Position
[F11] - Toggle Extra Information
[F1] - Toggles FirstPerson/ThirdPerson Camera Modes
[F5] - Default Speed
[=] - Increase speed
[-] - Decrease speed
[BackSpace] - Toggle GodMode
o - Gives 999 ammo
p - Gives all weapons

Note: I've added the GodMode cheat and enabled the speed cheat also..
you will notice that once in devmode all the levels of the game are
also unlocked