Pause the game during gameplay and enter the following codes to unlock the effect you want in the game.

Unlock ALL Bonuses:
Press R2, Down, L2, R1, Left, L2, Down, L1, Triangle.

Unlock ALL Power-Ups:
Press Left(2), Up(2), L1, R2, Circle, Down, Triangle.

Unlock ALL Dark Chronicles:
Press R1, Down, R2, L1, Right, R2, Triangle, Down, L1.

Unlock ALL Combo Moves:
Press Right, Down, Up, Down(2), R1, Triangle, Circle, Down.

Unlock Infinite Reaver Charge:
Press Down(2), Up, Left, R1, R2, Down, Triangle, Circle.

Unlock Invincibility:
Press Up, Down, Right, Down, R1, R2, Down, Triangle, L1.

Refill Health:
Press Left, Right, Left, Right, R1, L1, Circle, Triangle, Down.

Disable Textures:
Pause the game and press the following:
L1
Down
R2
Right
R2
Up
Triangle
L1
Down

Wireframe Mode:
Pause the game and press the following:
L1
Down
L1
Up
R1
L2
L1
Down
Triangle

Cartoon Mode:
Pause the game and press the following:
Up
Down
Up
Down
R1
R2
Down
Circle
Triangle