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.

Credits level:  Click Left Analog-stick(2), click Right Analog-stick(2), press X, Y, B, A, B, A at the main menu.

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.

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.

Door explosion:  Throw a frag grenade at a double door and it should explode. Note: Stand far away from the door.

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.

Unlock Hall of Fame:  At the Main Menu, press Left Analog, Left Analog, Right Analog, Right Analog, X, Y, B, A, B, A.

Credits level:  Click Left Analog-stick(2), click Right Analog-stick(2), press X, Y, B, A, B, A at the main menu.

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!

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.

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.