On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Up, Left, Down, Right, Circle. A message will confirm correct code entry. This mode allows unlimited ammunition.
Bang Bang Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Circle, Triangle, Square,
Circle, Right. A message will confirm correct code entry.
Boomstick Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Right, Circle(3), Square. A message will confirm correct code entry. This mode has unlimited shotguns.
Chapter 1: All pistol disarms
When you start the level, a man will appear and try to shoot you. Lock on to him and use your dog (Shadow) to kill him. Shadow will bring his gun to you. When you kill him, another man by a crane will start to shoot. Lock on to him and shoot him with the gun you received. When you kill him, some pipes will fall down, making it appear as if you cannot get through. However, you can. Immediately when you enter, a man will come up behind you and say "Drop it!". You will throw down your weapon and turn around. When you turn around, you will not be able to move anymore --this will make it easier. You will be prompted to press Circle to disarm him. You can either do that, or do it with the Analog-stick. To get all of them, keep doing the level over or try it the old fashioned way.
Chapter 13: Voice access
Kill one of the men that has green on. You will see a man in yellow walk out in the open and run back. After a moment, the man in the yellow will run over to you. When he does this, and grab him. If another man runs with him, kill him and leave the man in yellow alive. Take him to give the voice authorization and you will be able to open gate. When you go over to the gate, a lot of men will be there. An easy way to kill all of them is to run up to them and grab one as a shield. The man you grab will get killed quickly. Keep doing this until only one person remains.
Chow Yun Jack Mode
At the screen that says "New Game", hold L1, L2, R1, R2. Then press TRIANGLE, CIRCLE, UP, UP, UP. Jack will have dual guns a-blazin'.
Defeating people without guns
To defeat people that do not have guns easier, keep blocking and dodging. If you do not dodge, you will still get hurt. When you are in the prison, you will learn how to reverse a grab. This allows you to avoid getting hurt when they grab you. When you reverse the grab, you will throw their arms in the air. This will leave them open to attack (punch, kick, grab, etc.). However, they can still block.
Disarms
Every type of weapon has five disarms (Circle, Up + Circle, Left + Circle, Right + Circle, and Down + Circle). An exception is the shotgun, which Circle and Up + Circle. Note: Disable the "Random Disarms" option or you will not learn any new ones. The disarms are held by one enemy on each level possessing guns. Go through the levels, disarming everyone possible. Keep tabs of who you were able to disarm in a particular room before you die. When you continue, you will know which ones are remaining to disarm until you check everyone. Then, move on, save, and repeat. There is a shotgun disarm on mission 2 after the Boss. There are fuve disarms for all weapons, including the shotgun. The enemies will only unlock disarms for the weapons they are using, and of course there are no disarms on the levels without guns. Always use cover, duck behind something, or wait around a corner and be patient. Eventually, they will approach closer. Press one of the Circle combos their fate is sealed. Draw them closer one by one and disarm them or take them hostage systematically, while never exposing yourself. The objective is to not get shot, or go down in a blaze of glory.
Fight Club Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Square, Left, Circle, Triangle. A message will confirm correct code entry.
Fight Fahook
When fighting Fahook in the second cargo hold; keep shooting at him while traveling in a circle from front to back of the cargo hold. At the front you will find an AK and at he rear by the open bay you will find an M4 (be careful not to get too close to the open rear of the plane or else you go bye-bye...). You will notice that Fahook keeps drinking from a bottle and spitting flames or recovering his health. As he is drinking you will see the red target around the bottle; when you do you must manually target the bottle(R2 & annalog)shoot it out of his hands enough times and the bottle will break and then Fahook is easy prey.
Fight the Mayor
When fighting the Mayor keep diving at him repeatedly. This will get him winded without him being able to land many if any blows on you. When he gets winded he will double over to catch his breath; when he does rappidly tap X and Circle alternately this will choke him out and cause alot of dammage until he shakes you off. Then repeat untill he's toast.
Get 2 Guns
Go to the Press Start screen then to the New Game screen and hold L1 + L2 + R1 + R2 and press Triangle, Circle, Up, Up, Up.
Hard boiled mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Triangle, Square, Left(2), Circle. A message will confirm correct code entry. Hard boiled mode increases challenge level significantly, especially when used with the Super Cop difficulty setting.
How To Defuse Bombs Easy
When you defuse a bomb you have to use the left and right analog stick to defuse. When you move they pin when you push down push right up. Then do this throught the hole corse.
Infinite Adrenaline
At the new game screen, hold L1, L2, R1 and R2, then press Left, Right, Left, Circle, Square.
Invisible Jack
At the new game screen, hold L1, L2, R1, R2, then press Triangle, Triangle, Up, Up, Triangle. Note: Enemies can still see Jack, but all you see is the ball shadow.
Lazy Ass Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Down, Left, Down, Triangle, Down. A message will confirm correct code entry. This mode unlocks all levels, mini-games, and FMV sequences.
Make Enemies Weaker
Go to the Press Start screen then to the New Game screen and hold L1 + L2 + R1 + R2 and press Square, Left, Triangle, Up, Down.
Master Code
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Circle, Triangle, Square, Up, Right, X, Square. A message will confirm correct code entry. All mini-games, unlimited health, unlimited armor, unlimited bullets, all weapon, disarms, etc. will be unlocked.
One Hit Wonder mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Triangle, Circle(3), Left. A message will confirm correct code entry. This mode has unlimited health.
Precursor Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Up(2), Down(2), Up. A message will confirm correct code entry. This mode turns off all targeting cursors, which provides more challenge and a different appearance.
Sharpshooter Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Square(3), Down, Right. A message will confirm correct code entry.
Spine break
When you are locked up "Iron Point" and are walking around in the hall only two or three people will be around. One of them will run up to you and say something. When you run away, they start to walk away. As they walk away you can go in back of them and do the grab. However, they move too much and you will end up breaking their back.
Time To Pay Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Square(2), Circle(2), Right. A message will confirm correct code entry. This mode unlocks all disarms.
Unlimited Ammo
Go to the Press Start screen then to the New Game screen and hold L1 + L2 + R1 + R2 and press Up, Left, Down, Right, Circle.
Unlock Harder Boiled mode
At the main menu, hold L1 + L2 + R1 + R2 and press Triangle, Square, Left, Left, Circle.
Unlock Precursor mode
At the main menu, hold L1 + L2 + R1 + R2 and press Up, Up, Down, Down, Up.
Wussy Mode
On the "New Game" screen, just after the "Press Start" screen, hold L1 + L2 + R1 + R2 and press Square, Left, Triangle, Up, Down. A message will confirm correct code entry. Enemies will be less accurate in this mode.