All Shop Items
Go to the factions screen in your PDA (subscreen), and enter this code DOWN, DOWN, DOWN, DOWN, UP, LEFT, RIGHT, RIGHT on the D-pad.

Playground of Destruction
Beat the game to unlock Playground of Destruction mode. You will have all of the cash and items you earned in the previous game.

Add $1,000,000
Go to the PDA's faction status screen and enter the following on the D-pad: RIGHT, DOWN, LEFT, UP, UP, LEFT, DOWN, RIGHT. A soft click should confirm the code's activation.

Free Vehicle Repair
Go to any faction HQ and make sure that the last vehicle you entered and exitted is the vehicle you want to keep (and have repaired). Accept the contract. Once the merc is outside the HQ once more, locate your parked vehicle and cancel the contract. Decline to retry the contract and your vehicle will be available with full and ammo.

Blueprint Rewards
1: All C4 crate supply drop 5: Sniper Rifle Supply Drop 10: Stinger Supply Drop: 15: Anti-Tank Rocket Supply Drop 40: Prototype Rifle Supply Drop 60: $100,000 70: $100,000 80: $250,000 90: 250,000 100: 500,000