NARC
Mission skip
Quickly press R1, L1, R1, L1, R1, L1, Square. If you entered the code correctly, a message will appear.
Invincibility
Quickly press R1, L1, R1, L1, R1, L1, X. If you entered the code correctly, a message will appear.
Infinite ammunition
Enter the inventory screen, then quickly press R1, L1, R1, L1, R1, L1, Down on a weapon. Only the weapon that was highlighted will have unlimited ammunition, and the code must be repeated for each weapon. If you entered the code correctly, a message will appear.
All weapons
Quickly press R1, L1, R1, L1, R1, L1, R3. If you entered the code correctly, a message will appear.
All drugs
Enter the inventory screen, then quickly press R1, L1, R1, L1, R1, L1, L3 while not on a weapon. If you entered the code correctly, a message will appear.
Show drug stashes
Quickly press R1, L1, R1, L1, R1, L1, Left repeatedly. If you entered the code correctly, a message will appear.
The Refinery
Press L1 + R1 + Circle + X repeatedly.
Original NARC arcade game
Collect all 25 stashes of drugs in the U.S.A. to unlock the original NARC arcade game.
Bonus mission
Collect all 25 stashes of drugs in Asia to unlock a bonus mission.
Avoiding undercover cops
Sprint over everyone that you sell drugs to so that they will fall over. If any of those people were an undercover cop, he will not be able to pull out his badge and bust you. Also, women are never undercover cops.
Finding criminals in America
Bust anybody with a gray jacket in America, as they are always a criminal.