Call of Duty 4: Modern Warfare

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Achievements

Complete the following achievements to unlock Xbox Live Gamerscore points.

AchievementHow to unlock
Make the Jump (20 points)Infiltrate a cargo ship.
Earn a Winged Dagger (20 points)Complete 'F.N.G.'.
Win the War (40 points)Complete the game on any difficulty.
Dancing in the Dark (20 points)Kill the power.
Save the Bacon (20 points)Protect 'War Pig', the Abrams tank.
Death From Above (20 points)Operate an AC-130 gun ship.
Wrong Number (20 points)Find Al-Asad's safehouse.
Piggyback Ride (20 points)Carry Cpt. MacMillian to safety.
Desperate Measures (20 points)Corner Zakhaev's Son.
Look Sharp (20 points)Find 15 enemy intel items.
Eyes and Ears (20 points)Find 30 enemy intel items.
Down Boy Down (20 points)Survive a dog attack.
New Squadron Record (20 points)Complete the cargo ship mockup in less than 20 seconds.
Rescue Roycewicz (20 points)Save Pvt. Roycewicz on the stairs.
Your Show Sucks (20 points)Destroy all the TVs showing Al-Asad's speech.
Man of the People (10 points)Save the farmer.
Straight Flush (20 points)Kill 5 enemies with one shot while in the AC-130 gunship.
Ghillies In The Mist (20 points)Complete 'All Ghillied Up' without alerting any enemies.
Mile High Club (20 points)Sky dive to safety on Veteran difficulty.
No Rest for the Weary (10 points)Stab an injured crawling enemy.
Deep and Hard (90 points)Complete the game on Hardened or Veteran difficulty.
The Package (40 points)Complete 'Crew Expendable' on Veteran difficulty.
The Rescue (40 points)Complete 'Blackout' on Veteran difficulty.
The Search (40 points)Complete 'Charlie Don't Surf' on Veteran difficulty.
The Bog (40 points)Complete 'The Bog' and 'War Pig' on Veteran difficulty.
The Escape (40 points)Complete 'Hunted' and 'Death From Above' on Veteran difficulty.
The First Horseman (40 points)Complete 'Shock and Awe' on Veteran difficulty.
The Second Horseman (40 points)Complete 'Safehouse' on Veteran difficulty.
The Shot (40 points)Complete 'All Ghillied Up' and 'One Shot, One Kill' on Veteran difficulty.
The Third Horseman (40 points)Complete 'Heat' and 'The Sins of the Father' on Veteran difficulty.
The Ultimatum (40 points)Complete 'Ultimatum', 'All In', and 'No Fighting in the War Room' on Veteran difficulty.
The Fourth Horseman (40 points)Complete 'Game Over' on Veteran difficulty.
Daredevil (10 points)Kill an enemy while blinded by a flashbang in the single player campaign.
Roadkill (10 points)Kill 2 enemies by blowing up a car in the single player campaign.
Bird on the Ground (20 points)Shoot down an enemy helicopter with an RPG in the single player campaign.
Four of a Kind (20 points)Kill 4 enemies in a row with headshots in the single player campaign.
Three of a Kind (10 points)Kill 3 enemies in a row with your knife in the single player campaign.

Arcade Mode

To unlock Arcade Mode, beat the game once through on any difficulty level. Arcade Mode itself is split into two options - Full Challenge or Level Challenge - that add extra replayability to the game.

Cheat mode

Successfully complete the game. A "Cheat" option will now appear during game play at the "Options" menu.

Cheat options

Collect the Intel Pieces (enemy laptop computers) hidden throughout the game to unlock the cheat options. The number of pieces you have 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.

Crossfire Map Secret

In order to do this, you must be in Old-school mode and at Crossfire. First, you have to go to a building with a huge peice of debree on the third floor. You must go on the second floor and jump on a chair and then jump at the wall and move slightly to the left to land on the bricks. Then, sprint jump to the left of the peice of debree. Then, jump onto the debree and use it to get to the roof of the building. After that, jump toward the insignia on the building next to it, and you'll be in midair! Next, walk around the edge of the building until you come across a cloth hanging from a window. Don't cross it. Then, turn to the right and walk on to the other building. Then, you run to the other building, almost adjacent to it, and jump at the wall, only slightly to the left, but not too much. You'll fall...and die. After that attempt to jump on the builing in the same direction, and again, you land in midair. Then, there is a map bordering fence that you must follow. At the end of that fence, you can sprint jump to the other building. Basically use this for great sniping spots with the nearby 50-cal.

Golden Weapons

Golden weapons are a special camo that you get when you fully complete their respective weapon challenges.You can access them by choosing the camo of the respective weapon.The weapons don't get a boost or anything alike,it's purely cosmetic.

WeaponHow to unlock
Golden Ak-47Complete all Assault Rifle challenges.
Golden Desert EagleGet to Lv.55.
Golden DragonuvComplete all Sniper challenges.
Golden M1014Complete all Shotgun challenges.
Golden M60Complete all LMG challenges.
Golden Mini-UziComplete all SMG challenges.

Intel Pieces

Below is the level distribution list for Intel Pieces, which are enemy laptops full of information strewn throughout the game. There are thirty of them total. The left column is the level in question, while the right column is how many Intel Pieces can be found on that level. Levels with no Intel Pieces are excluded completely.

Level 2 - 2
Level 4 - 2
Level 5 - 3
Level 6 - 2
Level 7 - 2
Level 9 - 3
Level 10 - 2
Level 12 - 2
Level 13 - 3
Level 14 - 2
Level 16 - 2
Level 17 - 1
Level 18 - 2
Level 19 - 2

Multiplayer Weapons

Each weapon is unlocked in multiplayer at a certain rank.

WeaponHow to unlock
Assault Rifle - G3Reach Rank 25
Assault Rifle - G36CReach Rank 37
Assault Rifle - M14Reach Rank 46
Assault Rifle - M4 CarbineReach Rank 10
Assault Rifle - MP44Reach Rank 52
LMG - M60E4Reach Rank 19
Pistol - Desert EagleReach Rank 43
Pistol - Golden Desert EagleReach Rank 55
Pistol - M1911Reach Rank 16
Shotgun - M1014Reach Rank 31
SMG - AK-74UReach Rank 28
SMG - Mini UziReach Rank 13
SMG - P90Reach Rank 40
Sniper Rifle - BarretReach Rank 49
Sniper Rifle - DragunovReach Rank 22
Sniper Rifle - M40Reach Rank 04
Sniper Rifle - R700Reach Rank 34

New Mission

To play an all-new mission, which is an extra mission after the main quest is completed, beat the game and view the ending credits thereafter. After they've run their course, you will then be given the opportunity to play one last single player mission before all is said and done.

Prestige Mode

To unlock Prestige Mode, which is a multiplayer-only mode, you must reach experience level fifty-five. Instead of capping out at level fifty-five, which is the highest level, Prestige Mode allows you to start again from level one. This can be done a total of ten times, giving you ten different icons in in-game lobbies to show your extreme achievement.

Various Codes

Cheats are unlocked not by inserting passwords, but by acquiring the thirty Intel Pieces strewn throughout the game. The more of them you collect, the more cheats you can access. On the left are the number of Intel Pieces collected, and on the right are the cheats that are unlocked, with an explanation of what each does.

Number of Intel piecesUnlockable
2 - "CoD Noir"Play the game in black and white.
4 - "Photo-Negative"Game colors become inverted.
6 - "Super Contrast"Game's contrast increases.
8 - "Ragtime Warfare"The game feels like an old silent movie.
10 - "Cluster Bombs"One frag grenade thrown equals five in explosion.
15 - "A Bad Year"Enemies explode into tires when shot.
20 - "Slow-Mo Ability"Game plays at 40% normal speed.
30 - "Infinite Ammo"Just what it says.