At the menu screen, enter LEFT, LEFT, RIGHT, RIGHT, A, B, LEFT STICK, LEFT STICK.
Basement Level Of Ship
This glitch is to get to the restricted basment level of the ship during online play. First you need to start on the green teams side of the ship. The chairs on the right or left side of the ship can be used. You need to get onto the chairs, this is aquired by crouching and standing furiously, until you glitch on them. Then you need someone to stand facing the chairs so you can walk on their gun to the top of the chairs. This may take a few tries. Once on top have the person stand in front of either the chairs facing the basement or the edge of ship, this does not make a big deal but will affect difficulty. Once you have decided which way you will go you will need him to croush down, stand in position and walk on him to either get to the basement side or front side it will be different difficulties and placements for each side. For basement side you will need to slide of him to the opening so you fall down, hopefully you don't touch the railing and fall off his head to a safe landing, but if not then you will lose around 3 bars, maybe even all. So be careful! But, if you chose the other way, the front of ship you will need to get on the front then have him in between you and the basement area. Run over him to the basement and you will be down, though not the quickest way, it IS the safest. This can be attained easier by using more than just one other person to help you, it could vary from one to a team to make the entire walk.
Climbing Glitch
On some levels, especially ferry boat, you can climb on chairs and stuff to get in good spots. Get parallel to whatever you want to climb on and click the left Thumbstick really fast.
Credits level
Click Left Analog-stick(2), click Right Analog-stick(2), press X, Y, B, A, B, A at the main menu.
Door explosion
Throw a frag grenade at a double door and it should explode. Note: Stand far away from the door.
Ferry Boat Roof
This is just a fun little glitch on the ferry boat online level. When you start from i think red's side, you will need to go up the stairs and to the top of the boat, there will be around the corner a small set of stairs with 3 doors, two down below across from each other and one on your level. You will be on top of the stairs and crouch down. Use your primary weapon to zoom in on the dark blue strip on the roof across from you(near 3rd light)then just hold forward on joystick and walk forward crouched as fast as you can. It may take a few tries but it is for fun and won't affect gameplay much.
Garbage Man
When on X-Box Live on the map Agora there is a balcany with 2 garbage bags.(one is big one is small.)walk(or run)into either of them and crouch you should look like the garbage bag.(be careful your gun may stick out and many people may know this glitch.) THIS ONLY WORKS ON ADVERSARAIL MODES!
God mode
Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play. The message "God Activated" will appear to confirm correct code entry. Note: This only seems to effect you, and not your team or hostages.
Hall of Fame
At the main menu press: Left Thumb Stick, Left Thumb Stick, Right Thumb Stick, Right Thumb Stick, X, Y, B, A, B, A.
Laser trails
Press Up, Down, Up, Down, click Right Analog-stick(2) during game play. Rainbow weapons will shoot red laser trails and opposing force weapons will shoot blue laser trails.
Look through walls
Stand sideways against a wall. Click the Right Analog-stick and as soon as you are crouched, press the D-pad in the direction of the wall. You should have leaned into the wall just long enough to see what is on the other side. This glitch should work almost anywhere in the game, even online.
Military Base: Freeze on tire
There is a tire leaning against the wall by the tank. Get up against that same wall, look all the way down, and slowly walk over the top of the tire. You will be lifted off the tire so your feet are not touching the ground anymore. You are now frozen on the tire. The only way out is to kill yourself or quit. This can be done online and offline.
Military Base: Shooting down helicopter
In the Military base level, you must shoot down a helicopter to gain intel on the rocket facility that belongs to the general. It can be difficult to shoot it down. After you destroy the train, you will go through a series of corridors. In the one that leads to the heli pad, a man runs out the door to warn the general and pilot that you are coming. Do not shoot him. Note: Enable the "God mode" code or he may kill you. Save the game in case the chopper does get away. After the man runs out, do not move out the door or the helicopter will lift off. Then, aim for the pilots window and empty a clip at the pilot. He should die, but just in case, run out and keep firing at the pilot. A glitch will happen; the helicopter will take off after he dies, but it will then crash. Make sure to empty at least a magazine or more to break the window and another to kill the pilot. Do not kill the general.
Prince Of Persia and Splinter Cell references
In the first level, you will notice numerous Prince Of Persia and Splinter Cell billboards all over the subway.
Rocket Facility: Defusing the bomb
In the Rocket Facility level, you must defuse the bomb before anyone knows you are there. If they spot you, they will pull an alarm, the bomb will explode, and you will fail the mission. Try using the UMP sub-machine gun because it is silenced. You also have a motion tracker. If there is more than one enemy in a room, do not go in until they are standing next to each other so that you can get a fast kill.
Shoot through walls
Go up to any wall that leads into a room or outside. Stand beside the wall crouching or standing, then click the Left Analog-stick to stand or crouch. Lean towards the wall. You must do this at the exact same moment. You can now shoot through the wall. You must keep doing the glitch. You do not stay through the wall; you will just get a peek of what is inside or outside. You can also throw grenades through the wall by using this glitch. but you must have perfect timing.
Switch to terrorist hunt map
Once online, go to mission then return to team survival. Choose Hotel or Nuclear Facility. Instead of being the original map for it, it will be the Terrorist Hunt map. The terrorists are still in the game -- be careful. Also, it might have "0" next to the stars for your connection and it will not rise. This also makes it slightly more extreme to see if you and your opponents can work together, then afterwards kill each other.
Wall of Fame Map
At the menu screen, enter LEFT STICK, LEFT STICK, RIGHT STICK, RIGHT STICK, X, Y, B, A, B, A.
