Mercenaries

Must be entered in PDA FACTIONS mode. (The codes do not work until the correct amount of National Treasure/Blueprints have been found.)

Collect the National Treasures to unlock the following.

Collect the blueprints to unlock these features.

Rewards for destroying the posts.

Destroy Monuments to Unlock.

Beat the game with all members of the deck either captured or killed. The cheat crate contains(spoilers): a grenade pistol, a street sweeper(a special gun), and a portable airtstrike.

If you play some of the last of each factions' missions (Spades Section), you should unlock some skins. I believe it's the 2nd to last mission. Maybe the first.

If you go into a GSRN Van or stay near one, you will hear about "your" latest capture/killing. The reports are pretty funny even though their lying that the Allies did it.

At any time during the game when you have a vehicle that needs repairing or more ammo you can get both for free by doing a mission and canceling the contract. All you need to do is park the vehicle in the base where the mission is, accept the contract, and then cancel the contract. You’ll get the retry screen, select no, and then your vehicle is fully repaired and rearmed without losing money. You can then do the same mission at a later time.

When low on ammo, mount a turret in a vehicle and your ammo will be replinished.

You can kill faction members (including Civilians) without penalty by running over their vehicle with a tank.

The first side missions "$" you come across are really simple"Can you get from Camp X to Camp Y in under 2 minutes?" You can pass these easily with lots of extra time, BUT DON'T. These missions do not disappear when completed. They allow you compete against your previous time for the same $5000 prize. So if you let the clock run till its been 1:55 before completing and then come back and do it in 1:50 then 1:45 you will net yourself alot more money.This train of thought works for other missions too. There is a side mission where you push a barrel over 50m, but you can keep trying so ideally you would push it 50, 51,52,53,54 to the limit.

At any time if your relations with the Russian Mob are not at the maximum, just steal the $ marked Mafia truck that's right next to the Mafia Chop Shop Garages in both of the cities and drive it into their garage.While it doesn't give you money like other vehicles because it's one of their own cars, you still get the respect bonus, so you can just quickly repeat the process to quickly raise your mafia relations.

Go to the Russian Mafia HQ. Go south until you come to the next building (It has a pink neon light across the roof). You should see a rusty door. Take a car and drive up to it for it to open. Put your vehicle in and instant cash!