At the 'New Game' screen, hold L+R and enter the following:
Master Code:
X, Y, B, Up, Right, A, B
Level Select:
Down, Left, Down, Y, Down
All Guns, Infinite Ammo:
Up, Left, Down, Right, X
All Disarms:
B, B, X, X, Right
All Headshot Kills:
B, B, B, Down, Right
Infinite Health:
B, Y, Left, Up, Right
Infinite Shadow Stamina:
X, B, Y, X, Down
Infinite Adrenaline:
Left, Right, Left, X, B
Infinite Armor:
Up, Up, Up, B, Down
Infinite Human Shields:
B, Y, X, Y, B
One Hit Kills:
Y, X, X, X, Left
Unseen by Enemies:
Y, Y, Up, Up, Y
Double Melee Damage:
X, X, Up, Up, B.
Stronger Punches and Kicks:
Down, X, Left, Left, Left
Chow Yun Jack Mode - Dual guns:
Y, X, Up, Up, Up
Wussy Mode - Enemies less accurate:
B, Left, Y, Up, Down.
Hard Boiled Mode - Enemies more accurate:
Y, B, Left, Left, Circle
Precursor Mode - Turns off targeting:
Up, Up, Down, Down, Up.
Boomstick Mode - Infinite Shotgun:
Right, X, X, X, B
