When you complete the game on any difficulty setting the mini-games will become an available option.

This bunch of codes (apart from the last one) will help you in the game if you are struggling. To enter them go to the 'New Game' option at the 'Main' menu and hold L1 + L2 + R1 + R2 and enter the code for the corresponding cheat. If you have entered the code correctly a confirmation message will appear on screen.

Unlock Infinite Health:
Press Square, Triangle, Left, Up, Right.

Unlock Infinite Shadow Stamina:
Press Circle, Square, Triangle, Circle, Down.

Unlock Infinite Adrenaline:
Press Left, Right, Left, Circle, Square.

Unlock Infinite Armour:
Press Up(3), Square, Down.

Unlock Infinite Dual Guncons:
Press Triangle, Circle, Up(3).

Unlock Infinite Human Shields:
Press Square, Triangle, Circle, Triangle, Square.

Enemies Are More Accurate:
Press Triangle, Square, Left(2), Circle.

At the 'Main' menu select the 'New Game' option and hold L1 + L2 + R1 + R2 and enter the following codes to enable the corresponding mode. If you enter the code in correctly a message will appear on the screen as confirmation.

Unlock Lazy Ass Mode:
Press Down, Left, Down, Triangle, Down. This mode will also unlock ALL levels, Mini-games and FMV sequences.

Unlock 10,000 Bullets Mode:
Press Up, Left, Down, Right, Circle (unlimited ammunition).

Time To Pay Mode:
Press Square(2), Circle(2), Right (unlocks ALL disarms).

Unlock Precursor Mode:
Press Up(2), Down(2), Up. (turns off ALL targeting cursors).

Unlock Wussy Mode:
Press Square, Left, Triangle, Up, Down (enemies are less accurate).

Unlock Hard Boiled Mode:
Press Triangle, Square, Left(2), Circle (increases challenge level).

Unlock Boomstick Mode:
Press Right, Circle(3), Square (unlimited shotguns).

Chow Yun Jack Mode:
Press Triangle, Circle, Up(3) (double guns).

One Hit Wonder Mode:
Press Triangle, Circle(3), Left.

Unlock Sharpshooter Mode:
Press Square(3), Down, Right.

Enemies Disarmed -
In New game option at the Main menu hold L1 + L2 + R1 + R2 and press Right, Square, Left, Circle, Triangle. If the code has been entered correctly a message will appear.

Enemies More Accurate -
In New game option at the Main menu hold L1 + L2 + R1 + R2 and press Triangle, Square, Left(2) and Circle. If the code has been entered correctly a message will appear.

Double Melee Attack Damage -
In New game option at the Main menu hold L1 + L2 + R1 + R2 and press Circle(2), Up(2) and Square. If the code has been entered correctly a message will appear.