Army of Two Cheats - Xbox 360

Achievements
Complete the following achievements to unlock Xbox Live Gamerscore points:

Elite PMC (50 points) - Complete all missions as a Professional.
My Virtual Friend (35 points) - Complete all missions with the Partner AI.
Say Hello to my Little Friends (45 points) - Purchase the MP7, M134, DAO-X Protecta, MGL MK-X, and the M107 Light Fifty.
Man of Many Masks (50 points) - Purchase every mask variant.
If I Were a Rich Man (40 points) - Earn one million dollars in total over the course of campaign mode.
Fear is The Mind Killer (45 points) - Spend 1 minute straight at full Aggro.
Starting a Riot (30 points) - Kill 50 enemies total in Co-op Riot Shield.
Two Eyes are Better Than One (35 points) - Kill 5 enemies total using Co-op Snipe.
Seven-six-two Millimeter (20 points) - Kill 250 enemies total using Assault Rifles.
This is my Boom Stick! (20 points) - Kill 250 enemies total using Shotguns.
Spray and Pray (20 points) - Kill 250 enemies total using Machine Guns.
Dead Man's Hand (20 points) - Kill 150 enemies total using Handguns.
Alright, Who Wants Some? (20 points) - Kill 250 enemies total using SMGs.
One Shot. One Kill. (20 points) - Kill 100 enemies total using Sniper Rifles.
Big Boom! Big Bada Boom! (20 points) - Kill 25 enemies total using RPGs.
Flip You. Flip You For Real (20 points) - Kill 50 enemies total using the Melee Attack.
Fission Mailed (20 points) - Kill 25 Martyrs by shooting the Bomb Packs on their chests.
If It Bleeds, We Can Kill It (30 points) - Kill 25 Heavy Armor enemies.
Field Medic (30 points) - Drag and heal your partner 25 times.
Boots on the Ground (10 points) - Finish playing a versus ranked match.
The Devil's in the Details (20 points) - Complete 20 minor objectives in a ranked match.
Surviving The Game (25 points) - Complete a ranked match without ever needing to be revived.
Retirement Savings Plan (40 points) - Earn one billion dollars in total in ranked matches.
Out of Debt (15 points) - Heal your partner for the first time. Training does not count.
One Gun is Enough (35 points) - Win a ranked match without purchasing any additional weapons.
Beast with Two Fronts (20 points) - Kill 50 enemies total in Back-to-Back.
Running Man (30 points) - Kill 75 enemies while in the stealth mode of Overkill.
L'Abattoir (30 points) - Kill 100 enemies while in the power mode of Overkill.
Weapon Specialist (15 points) - Purchase 3 weapons.
Stonewall (30 points) - Kill 30 enemies using the Riot Shield melee attack.
My Kind of Case! (40 points) - Collect all of the information cases in the entire game.

There are also six secret achievements:

Secret Achievement (30 points) - ?
Secret Achievement (30 points) - ?
Secret Achievement (15 points) - ?
Secret Achievement (15 points) - ?
Secret Achievement (15 points) - ?
Secret Achievement (15 points) - ?

Unlock all Primary Weapons
After you beat the game on the Recruit difficulty, you now own every Primary weapon.

Unlock Professional Difficulty
Beat the game once on Recruit or Contractor.

Panda Express
Start a new campaign in China. The first objective pays $30,000 and can be cycled quickly (about 3 minutes with co-op snipe). The checkpoint is back down the hill next to the hovercraft. Once you get the checkpoint (saves your money), quit and restart the stage. Tedious but effective. You only wish you could make $10,000 per minute. To skip the pre-rendered cut-scene (and speed this up more) press [X].

Briefcase Locations
These are the locations of all fourteen intel briefcases in the game. Please keep in mind that they can only be collected one time, so if you've collected a briefcase, it won't appear again on a subsequent playthrough. On the flipside, however, if you didn't collect them on your first playthrough, they'll be there on subsequent playthroughs until you do:

Afghanistan
1.) Look behind the initial M-11 missile you encounter. There's a small path going uphill near it. That's where this intel briefcase is.
2.) Kill the first heavy armor guard you encounter (there will be a cutscene), and search the platform area nearby. The briefcase is on top of a short set of stairs at the back end of the platform.
3.) In the area adjacent to Brian Hick's cell, you will find this briefcase.

Iraq
1.) Right before climbing up the ladder in order to take out Ali Youseff's Helicopter, grab the briefcase at the bottom of the ladder.
2.) After calling in the air-strike on a nearby bunker, seek out a large tent near the dividing wall. The briefcase should be against the wall near the tent.
3.) Right before you meet Ali Youseff, there are some metal platforms with armed guards on it. Kill all of the enemies, and then climb up the steps to the platform's second level. Climb another ladder to a third level, where the briefcase is located.

Aircraft Carrier
1.) After landing on the ship's main deck, run to the right of the control tower. The briefcase is nearby.
2.) When you enter the hangar to use one of the parked planes to blow through a door, seek out some missiles. Look behind them, as they obscure the location of this briefcase.
3.) After setting the missiles to blow up the ship in the final hangar, look around to find a sort of makeshift basketball court. Behind the farthest basket is this briefcase.

China
1.) After arriving at the dam, head towards the first control tower. Across the dam is a similar control tower, where the briefcase is located.
2.) After you arrive at the village and co-op snipe some enemies, choose to take the rightmost path. When you come across the first house you can enter, do so, climbing to the second floor to find this briefcase.
3.) When you arrive at the factory, don't enter it immediately. Instead, search around and behind the factory to find this briefcase.

Miami
1.) Once you've opened the gates to the luggage area, you'll need to head to the control room. There's a smaller office near the control room where this briefcase is located.
2.) When you're on the third floor of the SSC Tower and must operate a lift, ignore the lift and run to the far end of the third floor, where the final of the fourteen briefcases is located.