A to Z Cheats

Operation Winback

Trial mode:
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At the "Press Start" screen, quickly press Up, Down(2), Right(3), Left(4), 
then hold Triangle and press Start to unlock trial mode. If you entered 
the code correctly, you will hear the sound of a gunshot. This mode 
allows any level in the game to be played. Note: The code must be entered 
before demonstration mode begins.

Sudden death mode:
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At the "Press Start" screen, quickly press L2, R2, L2, R2, Circle, 
Triangle, Circle, Triangle, then hold L1 and press Start to unlock 
sudden death mode. If you entered the code correctly, you will hear 
the sound of a gunshot. This mode allows opponents and your character 
to be killed with one hit. Note: The code must be entered before 
demonstration mode begins.

Max power mode:
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At the "Press Start" screen, quickly press L1, R2, L2, R2, L2, Triangle, 
Circle, Triangle, Circle, then hold L1 and press Start to unlock max 
power mode. If you entered the code correctly, you will hear the sound 
of a gunshot. This mode allows you to start with all weapons and infinite 
ammunition. Note: The code must be entered before demonstration mode begins.

All multi-player characters:
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At the "Press Start" screen, quickly press Up, Down(2), Right(3), Left(4), 
then hold Circle and press Start to unlock all the Bosses as well as the 
engineers and a few army characters in multi-player mode. If you entered 
the code correctly, you will hear the sound of a gunshot. Most of the 
Bosses have odd guns and may not be able to back up against walls or roll. 
Alternatively, successfully complete the game on the easy and normal 
difficulty settings. Note: The code must be entered before demonstration 
mode begins.

Max power, sudden death, trial modes:
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Successfully complete the game on the hard difficulty setting to unlock 
max power, sudden death, and trial modes.