Call of Duty 4: Unlock Cheat List


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.

* 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.

Unlockable: 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.

Unlockable: 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.
Unlockable: 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.
Hint: 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

Hint: Easy Intel

The following works on the mission entitled “Hunted”. After fighting your way through a basement (after going underneath a bridge, across a field, et cetera), you’ll reemerge outside. A nearby house next to a vending machine and a car should be your target from here. Inside the house, there’s a laptop on the table. This is a piece of Intel, and collecting all thirty of them in the game will unlock all of the Cheat options available. If you collect the Laptop, and then head through the nearby checkpoint, it will be permanently acquired on your save file. Kill yourself at this point (a Grenade is an easy way to do so), and backtrack to the house. Collect the Laptop again, go to the checkpoint, kill yourself, and repeat the process. By doing this, you can collect thirty laptops without actually collecting all thirty of them. (unverified)

[via IGN]

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