Easy Difficulty:
To achieve the Bronze Cheats, you must end the game in the easy difficulty This will open
two options for multiplayer mode: Weapons Stay and One hit kill

Medium Difficulty:
Successfully complete and save the game on the medium difficulty setting to unlock the "Game Speed",
"Blast Force", "One Hit Kill" and "Weapons Stay" options for multi-player mode.

Hard Difficulty:
Successfully complete and save the game on the hard difficulty setting to unlock the "Unlimited
Ammo", "All weapons", "Game Speed", "Blast Force", "One Hit Kill" and "Weapons Stay" options for
multi-player mode.