NARC
Quickly press R1, L1, R1, L1, R1, L1, Square. If you entered the code correctly, a message will appear.
Quickly press R1, L1, R1, L1, R1, L1, X. If you entered the code correctly, a message will appear.
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.
Quickly press R1, L1, R1, L1, R1, L1, R3. If you entered the code correctly, a message will appear.
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.
Quickly press R1, L1, R1, L1, R1, L1, Left repeatedly. If you entered the code correctly, a message will appear.
Press L1 + R1 + Circle + X repeatedly.
Collect all 25 stashes of drugs in the U.S.A. to unlock the original NARC arcade game.
Collect all 25 stashes of drugs in Asia to unlock a bonus mission.
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.
Bust anybody with a gray jacket in America, as they are always a criminal.