Call of Duty 4: Modern Warfare cheats and cheat codes for Xbox 360

Unlock cheat option:
Finish the entire game once. Next time while playing the game, you will see a 
new "Cheat" option at the "Options" menu.

You have to find the enemy laptop computers (Intel Pieces) to unlock new cheat 
options. Collect the following amount of pieces to unlock the indicated cheat 
option.

CoD Noir (monochrome graphics): Collect 2 Intel Pieces.
Photo-Negative (inver colors): Collect 4 Intel Pieces.
Super Contrast (more contrast): Collect 6 Intel Pieces.
Ragtime Warfare (silent movie mode): Collect 8 Intel Pieces.
Cluster Bombs (multiple frag grenade exposion): Collect 10 Intel Pieces. 
A Bad Year (Enemies explode into tires when shot) : Collect 15 Intel Pieces. 
Slow-Mo Ability (slow motion when you melee) : Collect 20 Intel Pieces. 
Infinite Ammo (no reload): Collect 30 Intel Pieces.
(Not work with RPGs, C4, Claymores) 

Intel Pieces:
The Intel Pieces can be found in the following levels. 

Level 2: You can find 2 Intel Pieces 
Level 4: You can find 2 Intel Pieces 
Level 5: You can find 3 Intel Pieces 
Level 6: You can find 2 Intel Pieces 
Level 7: You can find 2 Intel Pieces 
Level 9: You can find 3 Intel Pieces 
Level 10: You can find 2 Intel Pieces 
Level 12: You can find 2 Intel Pieces 
Level 13: You can find 3 Intel Pieces 
Level 14: You can find 2 Intel Pieces 
Level 16: You can find 2 Intel Pieces 
Level 17: You can find 1 Intel Piece 
Level 18: You can find 2 Intel Pieces 
Level 19: You can find 2 Intel Pieces 

There are a total of 30 Intel Pieces. 

Unlock Golden weapons:

Golden Mini-Uzi: Clear all SMG challenges. 
Golden M60: Clear all LMG challenges. 
Golden M1014: Clear all Shotgun challenges. 
Golden Dragonuv: Clear all Sniper challenges. 
Golden Desert Eagle: Reach level 55. 
Golden Ak-47: Clear all Assault Rifle challenges. 

Unlock Arcade mode:
Complete the entire game.

Unlock Mile High Club mission:
Finish the Story mode under any difficulty level.

Unlock bonus epilogue mission:
Finish the entire game and watch the credits to the end 
to unlock the bonus epilogue mission.

Unlock Prestige mode:
Achieve level 55 to unlock Prestige mode. This is a multiplayer-only mode 
that starts you again at level 1. You can repeat this 10 more times. 


Achievements:
Complete the following achievements to award the indicated amount of 
Xbox Live Gamerscore points. 

Your Show Sucks (20 gamerscore points): 
Awarded if you are destroyed all the TVs showing Al-Asad's speech.

Wrong Number (20 gamerscore points): 
Awarded if you are found Al-Asad's safehouse.

Win the War (40 gamerscore points): 
Awarded if you are finished the game on any difficulty level.

Three of a Kind (10 gamerscore points): 
Play in the single player campaign, and kill 3 enemies in a row by using 
your knife.

The Ultimatum (40 gamerscore points): 
Play on Veteran difficulty level and complete "Ultimatum", "All In", and 
"No Fighting".

The Third Horseman (40 gamerscore points): 
Play on Veteran difficulty level and complete "The Sins of the Father" 
and "Heat".

The Shot (40 gamerscore points): 
Play on Veteran difficulty level and complete "All Ghillied Up" and 
"One Shot, One Kill".

The Second Horseman (40 gamerscore points): 
Play on Veteran difficulty level and complete "Safehouse".

The Search (40 gamerscore points): 
Play on Veteran difficulty level and complete "Charlie Don't Surf".

The Rescue (40 gamerscore points): 
Complete '
Play on Veteran difficulty level and complete "Blackout".

The Package (40 gamerscore points): 
Play on Veteran difficulty level and complete "Crew Expendable".

The Fourth Horseman (40 gamerscore points): 
Play on Veteran difficulty level and complete "Game Over".

The First Horseman (40 gamerscore points): 
Play on Veteran difficulty level and complete "Shock and Awe".

The Escape (40 gamerscore points): 
Play on Veteran difficulty level and complete "Death From Above" 
and "Hunted".

The Bog (40 gamerscore points): 
Play on Veteran difficulty level and complete "The Bog" and "War Pig".

Straight Flush (20 gamerscore points): 
Kill five enemies with a single shot while in the AC-130 gunship.

Save the Bacon (20 gamerscore points): 
Protect "War Pig", the Abrams tank.

Roadkill (10 gamerscore points): 
Play in single palyer mode and kill 2 enemies by blowing up a car.

Rescue Roycewicz (20 gamerscore points): 
Awarded if you saved Pvt. Roycewicz on the stairs.

Piggyback Ride (20 gamerscore points): 
Awarded if you carry Cpt. MacMillian to safety.

No Rest for the Weary (10 gamerscore points): 
Stab an injured crawling enemy.

New Squadron Record (20 gamerscore points): 
Awarded if completed the cargo ship mockup no more than 20 seconds.

Mile High Club (20 gamerscore points): 
Sky dive to safety on Veteran difficulty level.

Man of the People (10 gamerscore points): 
Awarde if you saved the farmer.

Make the Jump (20 gamerscore points): 
Infiltrate a cargo ship.

Look Sharp (20 gamerscore points): 
Find 15 enemy intel items.

Ghillies In The Mist (20 gamerscore points): 
Finish "All Ghillied Up", but do not alert any enemies.

Four of a Kind (20 gamerscore points): 
Play in the single player campaign and kill 4 enemies in a row 
with headshots.

Eyes and Ears (20 gamerscore points): 
Find 30 enemy intel items.

Earn a Winged Dagger (20 gamerscore points): 
Finish "F.N.G.".

Down Boy Down (20 gamerscore points): 
Awarded if survived a dog attack.

Desperate Measures (20 gamerscore points): 
Corner Zakhaev's Son.

Deep and Hard (90 gamerscore points): 
Play on Hardened or Veteran difficulty level and finish the game.

Death From Above (20 gamerscore points): 
Operate an AC-130 gun ship.

Daredevil (10 gamerscore points): 
Play in the single player campaign and kill an enemy while blinded by 
a flashbang.

Dancing in the Dark (20 gamerscore points): 
Kill the power.

Bird on the Ground (20 gamerscore points): 
Play in the single player campaign and shoot down an enemy helicopter 
by using an RPG.