Cheat mode (console)
First enable the console by using the "Option" menu. Then, press ~ to bring up the console window. Type seta thereisacow "1337" as a console command. Then, press ~ to bring up the console window again and type in one of the codes below to activate the desired cheat. Note: Open the cfg file with a text editor and change the "seta monkeytoy" value from "1" to "0" if you need to.

Map names
Use opne of the entries below with the map or spdevmap codes above.

killhouse

cargoship

coup (intermission sequence)

blackout

bog_a

hunted

ac130

bog_b

airlift

aftermath (intermission sequence)

village_assault

scoutsniper

village_defend

ambush

icbm

launchfacility_b

jeepride

Cheat mode
Finish the game. A "Cheat" option will now appear while playing at the "Options" menu.

Cheat options
Simply collect the Intel Pieces hidden in the game to access the cheat options. The number of pieces you have will determines which specific cheats are available.

CoD Noir: 2 Intel Pieces. Allows black and white graphics.

Photo-Negative: 4 Intel Pieces. Inverts the colors.

Super Contrast: 6 Intel Pieces. Increases the contrast.

Ragtime Warfare: 8 Intel Pieces. Silent movie mode.

Cluster Bombs: 10 Intel Pieces. Frag grenades are more powerful.

A Bad Year: 15 Intel Pieces. Enemies explode into tires when shot.

Slow-Mo Ability: 20 Intel Pieces. Slow motion game play.

Infinite Ammo: 30 Intel Pieces.

Intel Pieces
The Intel Pieces can be found in the levels listed below. There are a total of thirty Intel Pieces.

Level 2: 2 Intel Pieces

Level 4: 2 Intel Pieces

Level 5: 3 Intel Pieces

Level 6: 2 Intel Pieces

Level 7: 2 Intel Pieces

Level 9: 3 Intel Pieces

Level 10: 2 Intel Pieces

Level 12: 2 Intel Pieces

Level 13: 3 Intel Pieces

Level 14: 2 Intel Pieces

Level 16: 2 Intel Pieces

Level 17: 1 Intel Piece

Level 18: 2 Intel Pieces

Level 19: 2 Intel Pieces

Golden weapons
Finish the listed task to access the matching golden weapon camouflage.

Golden Ak-47: Complete all Assault Rifle challenges.

Golden Desert Eagle: Reach level 55.

Golden Dragonuv: Complete all Sniper challenges.

Golden M1014: Complete all Shotgun challenges.

Golden M60: Complete all LMG challenges.

Golden Mini-Uzi: Complete all SMG challenges.

Rank bonuses
Reach the listed rank in Multi-player mode to access the matching bonus.

Private

Level 1: All starting equipment

Level 2: Demolitions Class Weapon Class

Level 3: Sniper Class Weapon Class

Lance Corporal

Level 4: Create a Class

Level 5: Gun Challenges

Level 6: New playlists

Corporal

Level 7: M40 Sniper Rifle

Level 8: Last Stand Perk Class 3

Level 9: Boot Camp Challenges 1

Sergeant

Level 10: M4 Carbine Assault Rifle

Level 11: UAV Jammer Perk Class 2

Level 12: Clan Tag

Staff Sergeant

Level 13: Mini Uzi Submachine Gun

Level 14: Bomb Squad Perk Class 1

Level 15: Boot Camp Challenges 2

Gunnery Sergeant

Level 16: M1911 Pistol

Level 17: Martyrdom Perk Class 2

Level 18: Boot Camp Challenges 3

Master Sergeant

Level 19: M60E4 Light Machine Gun

Level 20: Sleight of Hand Perk Class 2

Level 21: Operations Challenges

Master Gunnery Sergeant

Level 22: Dragunov Sniper Rifle

Level 23: Claymore Perk Class 1

Level 24: Operations Challenges 2

2nd Lieutenant

Level 25: G3 Assault Rifle

Level 26: Iron Lungs Perk Class 3

Level 27: Operations Challenges 3

1st Lieutenant

Level 28: AK-74U Submachine Gun

Level 29: Double Tab Perk Class 2

Level 30: Killer Challenges

Captain

Level 31: M1014 Shotgun

Level 32: Bandolier Perk Class 1

Level 33: Killer Challenges 2

Major

Level 34: R700 Sniper Rifle

Level 35: Eavesdrop Perk Class 3

Level 36: Killer Challenges 3

Lieutenant Colonel

Level 37: G36C Assault Rifle

Level 38: Overkill Perk Class 2

Level 39: Killer Challenges 4

Colonel

Level 40: P90 Submachine Gun

Level 41: Frag x 3 Perk Class 1

Level 42: Humiliation Challenges

Brigadier General

Level 43: Desert Eagle Pistol

Level 44: Dead Silence Perk Class 3

Level 45: Humiliation Challenges 2

Major General

Level 46: M14 Assault Rifle

Level 47: Humiliation Challenges 3

Level 48: Humiliation Challenges 4

Lieutenant General

Level 49: Barret Sniper Rifle

Level 50: Humiliation Challenges 5

Level 51: Elite Challenges

General

Level 52: MP44 Assault Rifle

Level 53: Elite Challenges 2

Level 54: Elite Challenges 3

Level 55: Commander Prestige Mode and Golden Desert Eagle

Special grenades

Flashbang

Pros: Blinds target, deafens and slows.

Cons: Must be looking at grenade or in its direction to have any effect.

Stun

Pros: Deafens, slows and does a little damage to target even if detonated behind.

Cons: Target can still see where he or she is shooting.

Smoke

Pros: Can temporarily provide cover for getaways, relocation and traps (for example, throw a smoke grenade into a room and plant a claymore in the doorway, then throw a grenade inside to flush him out).

Demo version: Cheat mode
First enable the console by using the option menu. Then, press ~ to bring up the console window. Thern enter seta thereisacow "1337" as a console command, then type spdevmap bog_a as a console command to start the demo game in cheat mode. Then, press ~ to bring up the console window again and type in one of the codes below to activate the desired cheat.

Arcade mode
Finish complete the game once.

Epilogue mission
Finish the game and watch the entire credits to access the bonus Epilogue mission.

Prestige mode
Attain level 55 to access Prestige mode. This is a multiplayer-only mode that will start you again at level 1. You can repeat this ten more times.