Silent Scope Cheats - Playstation 2

Professional Challenge mode
Hold "Trigger" at the mode selection screen and highlight "Training" or "Arcade". Keep "Trigger" held and press [Start]x4. The sound of a gun will confirm correct code entry. The aiming ring and enemy markers will be disabled in this mode.

Night Vision Challenge mode
Hold "Trigger" at the mode selection screen and highlight "Training" or "Arcade". Keep "Trigger" held and press [Start]x5. The sound of a gun will confirm correct code entry. The game will begin at night and require the Night Vision scope. Alternately, press [Up], [Left], [Down], [Right], [Up],
[Square], [Triangle] at the mode selection screen.

Convert health to time
Press [Start] to pause game play in arcade mode, then press [Up]x2, [Down]x2, [Left], [Right], [Left], [Right], [X], [Circle]. The sound of a gun will confirm correct code entry. One half of a life will be converted into five extra seconds. This code can be repeated.

Mirrored levels
Press [Left]x2, [Right], [Square], [Down]x2, [Up], [Triangle], [Up], [Right], [Down], [Up], [Left], [Down], [Square] at the mode selection screen. The sound of a gun will confirm correct code entry.

Disable aiming ring
Press [Right]x3, [Square] at the mode selection screen. The sound of a gun will confirm correct code entry.

Disable enemy markers
Presss [Right]x4, [Left], [Down], [Up], [Right] at the mode selection screen. The sound of a gun will confirm correct code entry.

Disable scope
Press [Right], [Down], [Right], [Square], [Right], [Down], [Right], [Square] at the mode selection screen. The sound of a gun will confirm correct code entry.

Scope-only graphics
Press [Down], [Triangle], [Up], [Square], [Triangle], [Down], [Right], [Down], [Right], [Square], [Triangle] at the mode selection screen. The sound of a gun will confirm correct code entry.

100 Challenge mode
Successfully complete all nine Outdoor Shooting Range challenges to unlock 100 Challenge Mode.

Alternate controls
A USB mouse can be used to aim. Press "Left Mouse Button" + "Right Mouse Button" to shoot.

Extra health
At the start of story mode in the second wave, a pool will appear randomly on one of the smaller buildings. Use your scope to zoom in on the pool and look for a woman in a bikini. If done correctly, instead of your regular scope it will be a pinkish red heart and you will gain extra health. This also can be done on the highway level by looking for a pink car.

Extra points
Shoot an enemy's gun to get 1000 points.

Rescuing the President: Lights out
When rescuing the President from the enemy base, choose to parachute in and shoot out all the lights at the bottom so they cannot see you.