More Duke means more cheat codes. Note that some codes will not work if others are active. Experiment!
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Double Duke (2x Damage)
Pause and press L2, R2, L2, R2, L2, R2, L2, R2, L2, R2
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All Inventory
Pause and press R1(x5), L2(x5)
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All Keys
Pause and press Up, Right, Up, Left, Down, Up, Right, Left, Right, Down.
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All Weapons
Pause and press L1, L2, Up, L1, L2, Down, R1, Right, R2, Left.
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Big Head Duke
Pause and press R1(x9), Up
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Big Head Enemies
Pause and press R1(x9), Left
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Super Weapons Enabled
Pause and press R1, R2, L2, L1, R1, R2, L2, L1, Select, Select
- Hidden Rogue Trip Commercial
Press L1+ L2 + R1 + R2 when the GT Interactive logo comes on after you first turn on the game (Start game then press Cross once, then hold shoulder buttons).
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Unlimited Ammo
Pause and press Left, Right, Left, Right, Select, Left, Right, Left, Right, Select.
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Invulnerability
Pause and press L2, R1, L1, R2, Up, Down, Up, Down, Select, Select.
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Invulnerability (temporary)
Pause and press R1, L2, L1, L2, R1, L1, R1, L2, L1, L2
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Invisibility
Pause and press L1, R1, L1, R1, L1, R1, L1, R1, L1, R1.
- Level Select
Pause and press Down(x9), Up. Quit the game and go to the main menu. Choose the “Time to Kill” option, press Left or Right to choose a level and press Cross to begin.
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Tiny Head Duke
Pause and press R1(x9), Down.
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Tiny Head Enemies
Pause and press R1(x3), L1(x3), R2(x3), Right.
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View Credits
Pause and press Select, Up(x9), Select, R1. Exit out of the stage to view
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View Intro
Pause and press Select, Up(x9), Select, L1. Exit out of the stage to view.
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View Kilt Sequence
Pause and press Select, Up(x9), Select, R2. Exit out of the stage to view.
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View Victory
Pause and press Select, Up(x9), Select, L2. Exit out of the stage to view.