Do not save your game when using the below cheat codes or you could corrupt your save file. Also, you could end up saving the cheat and not be able to reverse its effect. Enter while playing:
Flying Tank To get the flying tank enter circle, circle, circle, circle, circle, circle, R1, L2, L1, triangle, circle and triangle. Then get in the tank and put in the low gravity cheat - right, R2, O, R1, L2, down, L1 and R1. Turn the missle launcher one hundred and eighty degrees, and hold down the gas button X. Keep firing O and you will start to fly.
Flying fire truck Enter the low gravity cheat (right, R2, O, R1, L2, down, L1 and R1). Then steal a fire truck. Turn the water hose one hundred and eighty degrees to see the water. Press O to find out where the water is at, then hold the gas button X. Keep pressing O and you will start flying.
Garage Money Put a car in your garage and blow it up. Go away and go back and the same car will be in your garage. Keep repeating this to get loads of money!
Regain car health When in a car, if it begins to start bellowing smoke or even catches fire, quickly type the health cheat which is R2, R2, L1, R1, up, down, left, right, up, down, left, right...then the car won't blow up!
All weapons To get all the weapons in the game press R2, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up.
Full Armor For full Armor press R2, R2, L1, L2,Left, Down, Right, Up, Left, Down, Right, Up.
Full Health While playing, press R2, R2, L1, R1, Left, Down, Right, Up, Left, Down, Right, Up.
People fight each other While playing, press Down, Up, Left, Up, X, R1, R2, L2, L1. Note: saving the game will make the effects of this code permanent.
Unlimited Ammo If you keep entering the all weapons cheat, your clip size will be at 9,999. When shooting the bullets go down but when you come to reload the clip will staty a 9,999. P.S. If you don't know the all weapons cheat it's R2, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up.
All people hate you While playing, press Down, Up, Left, Up, X, R1, R2, L1, L2. Note: saving the game will make the effects of this code permanent.
Crazy people While playing, press R2, R1, Triangle, X, L2, L1, Up, Down. Note: saving the game will make the effects of this code permanent.
People fistfight each other While playing, press Right, R2, Circle, R1, L2, Down, L1, R1.
Improved car handling While playing, press R1, L1, R2, L1, Left, R1, R1, Triangle.
Blow up all cars While playing, press L2, R2, L1, R1, L2, R2, Triangle, Square, Circle, Triangle, L2, L1
Gore Mode While playing, press Square, L1, Circle, Down, L1, R1, Triangle, Right, L1, X.
Tank During the game press Circle six times, R1, L2, L1, Triangle, Circle, Triangle. The tank will appear in front of you. This may be repeated as many times as needed. Pressing circle will fire bullets.
Improved driving skills During the game press R1, L1, R2, L1, Left, R1, R1, Triangle. Press L3 or R3 to jump while driving.
Increased gore During the game press Square, L1, Circle, Down, L1, R1, Triangle, Right, L1, X. Note: saving the game will make the effects of this code permanent.
Fog During the game press L1, L2, R1, R2, R2, R1, L2, X.
Overcast skies During the game press L1, L2, R1, R2, R2, R1, L2, Square.
Speed up time During the game press Circle, Circle, Circle, Square, Square, Square, Square, Square, L1, Triangle, Circle, Triangle.
Change costumes During the game press Right, Down, Left, Up, L1, L2, Up, Left, Down, Right.
Pedestrians riot During the game press Down, Up, Left, Up, X, R1, R2, L2, L1.
Pedestrians attack During the game press Down, Up, Left, Up, X, R1, R2, L1, L2. Note: saving the game will make the effects of this code permanent.
Pedestrians crazy During the game press R2, R1, Triangle, X, L2, L1, Up, Down.
Pedestrians fighting During the game press Right, R2, Circle, R1, L2, Down, L1, R1.
Police bribe Get 45 kills in vigilante mode to unlock a police bribe that is available at your hideout.
Items These items are always available at your safe house, and when you regenerate. The numbers indicate the number of hidden packages needed for that item.
Infinite run To continue to run at a fast pace without fatigue, just tap X instead of holding it down. This helps when trying to give your character exercise so that he can run for longer periods of time as well.
Invisible cars at complex While at the 2nd island, go to the complex with all the cars by the paint shop. Get an Esporanto and go to the top floor. Enter perfect driving, press R3 and stay on the building. All the cars should disappear.
Get a free ride to the third island without stealing a car When you are on Staunton island go by the bridge that leads to Shoreside Vale, wait for a car to come and get in the way of it, then jump on it and let it take you to Shoreside Vale.
Tunnel under Portland Coming up onto the hill where you took the guy's car and had it bombed, if you go very carefully of the side of the cliff with almost no speed your car will stay on the beach below. Follow the mountain's side all the way around the island untill you find flatbed train cars. Follow their tracks through a tunnel and midway thorugh there are hobos gathered around a secret package. Take the package. Brutally murder the hobos with no witnesses or reprecussions (you can also enter the tunnel the opposite way through the back of the super mart).
Get to Staunton Island Early First activate the better driving code, the one where you can jump, then get a fast car and get to the broken bridge. In the corner where you can't go in, there is an opening - just drive through (having first got a fast car). Then build up speed and go all the way to then end where the bridge is broken and press L3 to jump. You should land on the other side.
Steal Cars with alarms without Being Detected If you want to hack a car that has an alarm get in the car, and as soon as the alarm goes on, get out of the car and wait until it turns off then go back and steal it. It also works if you bump the car with another one.
Advance to Staunton Island To advance from Portland to Staunton Island prematurely, go to the subway. The subway should be closed off at he bottom of the stairs. Take a car down the stairs and either crash it or park it so the door is right next to the subway door. When you open the door to get out you will step out and through the closed off gate. Then go down to to subway and get on the train. It will take you to Staunton Island. It is tricky to get your car to land near the gate but it is possible.
Get into the Prison on Level 2 On level 2 Chose a really fast car (Ferrari GT or Cop Car) and drive as fast as possible down towards the bridge that leads to the prison. Jump off the bridge at you hit top speed and veer towards the left. Once you're on top off the wall jump out of your car real quick before it falls into the river. Follow the wall around to the left, you will see stairs leading down into the prison. This will definitely take a few tries.
Get free shot gun Go to the ammo-nation store. After you buy a gun walk up to the clerk and try to point the gun at him. The best you can because you can target him, kill him, he shoots back so do it fast and after you kill him walk up to the counter and you will get his shotgun.
Secret Car In the first part of the game in Portland you can get one of the best cars, the Banshee. Go to 8 Ball's auto yard. Right next door is an auto dealership. In side you will see a blue sports car that looks like a dodge viper. That's it. Bullets don't work on the glass so don't bother. Steal any of the cars in the parking lot and drive it into the glass, the glass will break and then just jump in the Banshee and it is now at your disposal. Note: There is a secret pack near the car.
Easy Cash To get more cash just hit other cars with your car or mess up your car so bad that it explodes then you get extra cash.
Free Repairs To repair your car for free, go to your hideout and put your car in the garage. Leave the garage so the door closes. Enter the garage again and your car will be as good as new.
Note: This does not get rid of the cops. It only fixes the damage.
Easier Bosses An easy way to take out bosses instead of fighting them, is to get a good car before the fight like a Hum-V or a pickup truck and just RAM them. Then they get out after their car is screwed up. When they do this just run him over. Much easier then taking him on in shooting wars.
Drive By Shootings To do a drive by shooting hold R2 + Circle, also L2 + Circle with R2, he will shoot right and L2 left. He will stick out his hand through the window and shoot. This only works with the UZI though. Good way to take out bosses to pull up next to them and shoot the hell out of them.
Be Careful When you kill people on the street they drop money. Try and kill Hookers and the old guys because they drop the most money. Don't attack gangsters their fellow gangsters will attack you too. This includes stealing the gangster's cars.
Flamethrower Location In Portland go to Hepburn Heights. Right next to the projects is a train platform. Jump on it and go to your left. Keep going until you reach the building that is really close to the track. You should see the flamethrower on the roof top. Jump over and get it and now you have a flamethrower.
Faster Taxis To have faster taxis you must have 100 fares in cab game-mode. The taxis are at Borgnine in Harwood/ Portland.
Police Bribe To get the police bribe you must have 45 kills in the vigilante game mode. The bribe is in your hideout.
Banshee In Portland, go to the Capital Autos shop. Take a big car and ram it into the glass on the store to break it. Inside a Banshee, which is the fastest car in the game and resembles a Shelby.
BP Barracks OL truck Ride the road by the water at Staunton Island. You will find a storage place with a lot of boxes. Go to the gate marked Keep Out. Enable the Better driving skills code, then drive in reverse and press L3 to jump over the gate. Get out to find a Barracks OL truck. It looks like a farm vehicle.
The BP Barracks OL can also be obtained during the Arms Shortage mission.
BP Patriot: Bulletproof To get the bulletproof Patriot (Hummer), complete the Marked Man mission for Roy (the cop) the second time that you meet him.
BF Injector Complete the Mafia missions in story mode to unlock the BF Injector buggy. Return to Portland and go to the Diablo parking lot (where the mission phone is located) between 19:00 to 24:00 to find the same buggy glimpsed in Joey's garage from the Mafia mission. It will appear in the same location and change color each time.
If you want to pick the color of the BF Injector, park a car with the desired color near the entrance of the building at the parking lot. The car does not appear to be scratched, other than the windshield when it hits something. It also never stays upside down.
Borgnine Taxi The Borgnine is a well built car or taxi. It is a brick red cabbie with spikes with blood on the bumpers. It is located in Harwood. Go to the head radio station. It usually is at the engine store next to the radio station after the game has been completed.
Borgnine Taxi Look closely on the back bumper of the Borgnine taxi with a sniper rifle. Sometimes it has about seven spikes with blood on them.