Here are all of the passwords for the levels in Twisted Metal:

Warehouse -- Circle, Triangle, Square, Circle, Circle

Freeway -- X, Square, Square, Circle, Triangle

Park -- X, Triangle, Square, Circle, Square

Cyburbia -- X, Square, Triangle, Triangle, Triangle

Rooftop -- Square, Triangle, X, Circle, X

- John Piddock

Codes:

Secret Level (More enemies)
	Square, Triangle, Circle, Square, Square

Helicopter View
	Circle, Circle, Triangle, X

- Various