Unlock Hard Boiled mode:
At the main menu, hold L + R and press Y, B, Left, Left, X.

Unlock Precursor mode:
At the main menu, hold L + R and press Up, Up, Down, Down, Up.

Unlimited Shotgun:
At the main menu, hold L + R and press Right, X, X, X, B.

Unlimited Ammo:
At the main menu, hold L + R and press Up, Left, Down, Right, X.

Always double handguns
Press start at the title screen so that it shows new game, load game and options. Now hold L + R and press Y, X, up, up, up.

Infinite ammo
Press start at the title screen so that it shows new game, load game and options. Now hold L + R and press up, left, down, right, X.

All Chapters:
At the main menu, hold L + R and press Down, Left, Down, Y, Down.

Dual guns:
At the main menu, hold L + R and press Y, X, Up, Up, Up.

All Disarms:
At the main menu, hold L + R and press B, B, X, X.

Less accurate enemies:
At the main menu, hold L + R and press B, Left, Y, Up, Down.

Super Cop mode
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press B, Y, Left, Up, Right. A message will confirm correct code entry. The game is more difficult in this mode.

Woof mode
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press X, B, Y, X, "Down." A message will confirm correct code entry. Shadow has unlimited Stamina in this mode.

Gimme Some Sugar, Baby mode
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press Left, Right, Left, X, B. A message will confirm correct code entry. You will have unlimited adrenaline in this mode.

Bulletproof mode
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press Up(3), B, Down. A message will confirm correct code entry. You will have unlimited armor in this mode.

Unlimited dual Guncons
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press Y, X, Up(3). A message will confirm correct code entry.

Up Close And Personal mode
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press B, Y, X, Y, B. A message will confirm correct code entry. This mode allows human shields to have unlimited health.

Powered-up punches and kicks
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press Y, X(3), Left. A message will confirm correct code entry.

Double melee attack damage
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press X(2), Up(2), B. A message will confirm correct code entry.

Enemies disarmed
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press Right, B, Left, X, Y. A message will confirm correct code entry.

Invisible character
On the "New Game" screen, just after the "Press Start" screen, hold L + R and press Y(2), Up(2), Y. A message will confirm correct code entry. Enemies can still see you, but you can only see your own shadow.