Unlockable weapons:
Unlock the following weapons by completing the game on the corresponding difficulties:
WEAPON – DIFFICULTY LEVEL
Primary weapons – Complete the game on Recruit difficulty.
Secondary weapons – Complete the game on Contractor difficulty.
Basic weapons – Complete the game on Professional difficulty.
All Other weapons – Complete the game on Operative difficulty.
Professional difficulty:
Complete the game on recruit or contractor difficulty to unlock Professional difficulty.
Surviving a fall:
To survive a big fall, roll upon landing to receive no damage.
Easy money in China mission:
In the China mission, complete the first objective for $30,000. Then quit and reload the mission for another $30,000. You may have to walk back down the mountain to get the money. Repeat as desired.
Switch characters anytime in campaign mode:
At the
campaign menu, select “Start New Campaign”. Select a character, go back
to the campaign menu, and select “Continue Campaign” to start with the
character you selected.
Intel briefcase locations:
You will get money for picking up a briefcase. Each briefcase can only be collected once. Pause the game and select the “Objective” option to check how many briefcases you have collected for the current level.
Help jumping:
If you require a step jump, have your partner help instead. Offer to pull your parnter. When he crouches down to jump, press circle before he grabs on. He will fall over and jump back up afterwards.
Heavy-Armored Guards:
In order to damage Heavy-Armored Guards, normally you must shoot them from behind. However, you can use the .50 caliber sniper rifle to knock them down. While they are down, you can inflict damage on them from all sides.
Briefcase locations:
The following are the locations of all 14 briefcases. You will get cash for each briefcase that you pick up.
Afghanistan
Behind the first M-11 missile is a small path going uphill. Follow it to find the briefcase.
Kill the first heavy armor guard you encounter. After the intermission sequence, search the nearby platform area. The briefcase is on top of a short set of stairs at the back end of the platform. Next to Brian Hick’s cell.
Iraq
At the bottom of the ladder before taking out Ali Youseff’s helicopter.
Call in the air-strike on a nearby bunker, and search for a large tent near the dividing wall. The briefcase is against the wall near the tent.
Just before meeting Ali Youseff you will see metal platforms with armed guards. Kill all of the guards then climb up the steps to the platform’s second level. Climb another ladder to the third level to find the briefcase.
Aircraft carrier
Land on the ship’s main platform.To the right of the control tower is the briefcase.
Enter the hangar to use one of the parked planes to blow through a door and look behind some missiles to find the briefcase.
After setting the missiles to blow up the ship in the final hangar, search until you find a makeshift basketball court. The briefcase is behind the far basketball hoop.
China
Go to the dam and move towards the first control tower. The briefcase is across the dam is another control tower.
Go to the village and co-op snipe some enemies. Follow the rightmost path. Enter the first house you can explore and search the second floor for the briefcase.
Outside and behind the factory is the briefcase.
Miami
Open the gates to the luggage area then go to the control room. In the smaller office near the control room is the briefcase.
On the third floor of the SSC Tower on the far end is the briefcase.