Invincibility:
     Pause  the  game, then press Up, Down, Right, Down, R1, R2, Down,
Triangle, L1.

Full stats:
     Pause  the  game,  then  press  Left, Right, Left, Right, R1, L1,
Circle, Triangle, Down.

All power-ups:
     Pause  the  game,  then press Left, Left, Up, Up, L1, R2, Circle,
Down, Triangle.

All combo moves:
     Pause  the  game,  then  press  Right,  Down, Up, Down, Down, R1,
Triangle, Circle, Down.

Unlimited Reaver charge:
     Pause  the  game,  then press Down, Down, Up, Left, R1, R2, Down,
Triangle, Circle.

All Dark Chronicles:
     Pause the game, then press R1, Down, R2, L1, Right, R2, Triangle,
Down, L1.

All bonuses:
     Pause  the game, then press R2, Down, L2, R1, Left, L2, Down, L1,
Triangle.

Cartoon mode:
     Pause  the  game,  then  press  Up, Down, Up, Down, R1, R2, Down,
Circle, Triangle.

Wireframe mode:
     Pause  the  game,  then press L1, Down, L1, Up, R1, L2, L1, Down,
Triangle.

No texture mode:
     Pause the game, then press L1, Down, R2, Right, R2, Up, Triangle,
L1, Down.

Cardboard tube Reaver:
     Pause the game as Kain, then press Up, Down, Left, Right, R2, L2,
Triangle, Down, Circle.