Things You'll Need
Instructions
GameCube Eastern Front Unlock
Insert the Action Replay memory card into the second slot of your GameCube. Insert the Action Replay disc into the console and power it on.
Scroll down to "Call of Duty: Finest Hour" and press "A" to select the game. Highlight "Add New Code" and press "A."
Input the following code with the onscreen keyboard: 5162-HDH8-9ZVKV C4FF-VRRU-V05YV. Press "A." Enter a name for the code such as "Level Unlock" and press "A" to return to the code select menu.
Highlight the "Level Unlock" code and press "A" to activate it. Press "Start" then open your GameCube lid, remove the Action Replay disc and insert "Call of Duty: Finest Hour." Close the lid to begin the game with the Eastern Front levels unlocked.
PS2 Version Code
Insert one controller into each controller port on the PlayStation 2. Navigate to the "Level Select" screen.
Press and hold "Up" on the second controller during the input of the code.
Input Start, Select, Select and "Square" on the first controller. Release "Up" on the second controller. All levels will unlock.
Press the directional buttons to highlight any level you want to play and press "X."
Xbox Version Code
Insert a controller into the first and second port of the Xbox console. Navigate to the "Level Select" screen.
Press and hold "Up" on the second controller.
Press Start, Back, Back and "X" on the first controller. Release "Up" on the second controller. All levels will unlock for play.
Highlight the level you want to play with the first controller and press "X."