NARC cheats and cheat codes for Playstation 2

Invincibility:
Press L1 + R1 + X repeatedly until a message will appear.

Unlimited ammunition:
Go to the inventory screen, after enter L1 + R1 + Down repeatedly on a weapon. 
You need re-enter the codes for each weapon. 

Unlock all drugs:
Go to the inventory screen, after enter L1 + R1 + L3 repeatedly, while not on a 
weapon.

Get all weapons:
Press R1, L1, R1, L1, R1, L1, R3

Skip Mission:
Press R1, L1, R1, L1, R1, L1, Square.

Unlock Refinery:
Press L1 + R1 +Circle + X repeatedly. 

Reveal drug stashes:
Press R1, L1, R1, L1, R1, L1, Left repeatedly. 

Extra mission:
Collect all 25 drug stashes in Asia. 

NARC arcade game:
Collect all 25 drug stashes in the USA. 

Bust criminals in America
If you seen somebody in gray jacket while palying in America, bust him,
because he is criminal.