Cheat mode:
     Codes are unlocked by performing certain tasks during the game. A
message  with the code will appear to confirm successful completion of
the  task.  Codes  cannot  be enabled until they are first unlocked in
this manner.

No textures:
     Hold L and press Black, A, B, A, Y, R during game play.

Draw enemy health:
     Hold L and press X, B, A, White, R, Y during game play.

Unlimited assault rifle ammunition:
     Hold White and press A, B, A, L, X, Y during game play.

Unlimited grenades:
     Hold White and press L, Y, R, B, L, X during game play.

Unlimited shotgun ammunition:
     Hold White and press R, B, X, L, X, A during game play.

Unlimited SMG ammunition:
     Hold White and press B, Y, L, R, A, B during game play.

Bulletproof Lara:
     Hold L and press A, R, Y, R, X, White during game play.

One shot kill:
     Hold L and press Y, A, Y, X, White, B during game play.

Wield Excalibur:
     Hold White and press Y, A, B, R, Y, L during game play.

Wield Soul Reaver:
     Hold White and press A, R, B, R, L, X during game play.