The Mummy Codes -

All weapons:
Pause game play and select "Quit". Select "Replay level" at the next screen, then select "Bonus game modes". Then, press Circle, Square, Circle, X(2), Triangle(2), Square. Alternately, finish the game with any completion percentage.

Bonus Cairo level:
Pause game play and select "Quit". Select "Replay level" at the next screen, then select "Bonus game modes". Then, press Triangle, X, Triangle, Circle, Square, Triangle, Circle, X. Alternately, finish the game with at least a 50% completion.

Unlimited ammunition:
Pause game play and select "Quit". Select "Replay level" at the next screen, then select "Bonus game modes". Then, press X, Triangle, X, Square, Circle, Triangle, Square, Triangle. Alternately, finish the game with at least a 55% completion.

Unlimited lives:
Pause game play and select "Quit". Select "Replay level" at the next screen, then select "Bonus game modes". Then, press Circle(2), Triangle, Circle, X, Square(2), X. Alternately, finish the game with at least a 60% completion.

Unlimited health:
Pause game play and select "Quit". Select "Replay level" at the next screen, then select "Bonus game modes". Then, press Triangle, X, Circle(2), Square, X, Triangle, Square. Alternately, finish the game with at least a 65% completion.

All cheats:
Finish the game with a 78% completion.