Call of Duty 4: Modern Warfare cheats and cheat codes for Playstation 3

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.

Super Contrast (more contrast): Collect 6 Intel Pieces.
Slow-Mo Ability (slow motion when you melee) : Collect 20 Intel Pieces. 
Ragtime Warfare (silent movie mode): Collect 8 Intel Pieces.
Photo-Negative (inver colors): Collect 4 Intel Pieces.
CoD Noir (monochrome graphics): Collect 2 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. 
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 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. 

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

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

Unlock Arcade mode:
Complete the entire game.


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.