Silent Scope
Hidden mode
At the mode selection screen, press Right, Down, Right, Square, Up, Square(2), Triangle, Down, Right, Down, Right, Square, Triangle. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
Mirrored levels
At the mode selection screen, press Left(2), Right, Square, Down(2), Up, Triangle, Up, Right, Down, Up, Left, Down, Square. If you entered the code correctly, you will hear the sound of a gun.
First person view
At the mode selection screen, press Up(4), Down(4). If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
Turbo mode
At the mode selection screen, press Down, Triangle, Up, Square, Triangle, Down, Right, Down, Right, Square, Triangle. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
Love mode
At the mode selection screen, press Left, Right(2), Square, Triangle. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
Night mode
At the mode selection screen, press Up, Right, Down, Left, Up, Square, Triangle. If you entered the code correctly, you will hear the sound of a gun. -From: ajgarcia@bigplanet.com
No crosshair
At the mode selection screen, press Right(3), Square. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
No scope
At the mode selection screen, press Right, Down, Right, Square, Right, Down, Right, Square. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
No enemy cursor
At the mode selection screen, press Right(4), Left, Down, Up, Right. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
Exchange a half of life for 5 seconds
Pause the game in arcade mode and press Up(2), Down(2), Left, Right, Left, Right, X, Circle. If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
Exchange 5 seconds for half of life
Pause the game in arcade mode and press Circle, X, Right, Left, Right, Left, Down(2), Up(2). If you entered the code correctly, you will hear the sound of a gun. -From: Olikong@aol.com
100 challenge mode
Successfully complete all nine outdoor shooting range challenges to unlock 100 challenge mode.
Extra options
Successfully complete the game on any difficulty setting
to unlock a real time window and up to 8 health in the options menu. Successfully
complete the game more that twice on any difficulty setting to unlock infinite
credits in the credits section of the options menu and +30 in the time limit
section