All Maps
Pause the game, then hold L1 and press X, Circle, Square, Triangle(2), Circle, X.
Full Health for Entire Team
Pause the game, then hold L1 and press Triangle(2), X, Circle(2), X, Square(2).
Hostages cannot Be Killed
Pause the game, then hold L1 and press Circle(2), Square, Triangle, X, Triangle, X, Circle.
View Ending Sequence
Pause the game, then hold L1 and press Square, Triangle, Square(2), Circle(2), X, Triangle.