While playing a game, hold L1 + L2 + R1 + R2 and press Up, Down, Left, Right(2), Left, Down, Up. If you entered the code correctly, you will hear a sound and the words "Invulnerability On" will appear.
Play as Warthog
Enter story mode, select any character and go to the suburbs for the second level. Go to the hill with the ferris wheel and look for the smoke coming from the building. Jump on the building to its right from the hill viewpoint. Gain some speed and try to land in the middle of the building. You should fall through the building and see something that looks like a computer panel. Shoot it and it will reveal Warthog as a playable character.
Exchange Weapons for Health
During gameplay, hold L1 + L2 + R1 + R2 and press Triangle, X, Square, Circle.
Infinite health and turbo
While playing a game, hold L1 + L2 + R1 + R2 and quickly press Right, Left, Down, Up. If you entered the code correctly, the words "Invulnerability On" will appear. Enter the code again to disable it.
While playing a game, hold L1 + R1 + L2 + R2 and quickly press Up, X, Left, Circle. If you entered the code correctly, a message will appear. Enter the code again to disable it.
While playing a game, hold L1 + R1 + L2 + R2 and quickly press X(2), Up. If you entered the code correctly, a message will appear. Enter the code again to disable it.
Set the Controls to Classic. During gameplay, hold L1 + L2 + R1 + R2 and press Up, X, Left, Circle.
Mega machine guns
While playing a game, hold L1 + R1 + L2 + R2 and quickly press X(2), Triangle. If you entered the code correctly, a message will appear. Enter the code again to disable it.
Special freeze attack
While playing a game, hold L1 + R1 + L2 + R2 and quickly press Right, Left, Up.
Exchange weapons for health
While playing a game, hold L1 + L2 + R1 + R2 and quickly press Triangle, X, Square, Circle. If you entered the code correctly, the words "Weapons For Health" will appear on the screen.
Alternate weapon view
While playing a game, press Select + Right.
Energy Attack List:
(Note: These are put in during the game)
Freeze Ball Up, Down, Up
Mine Right, Left, Down
Charge-Up Mine Right, Left, Down (hold down for one second)
Invisibility Left, Left, Down, Down
Shield Right, Right, Down, Down
Jump L1 + R1 Simultaneously
Rear-Fire Weapon Left, Right, Down + weapon fire button
Play as Yellow Jacket
At the Junkyard level, shoot down the airplane that circles around the level. The easiest way to shoot down the plane is with a homing or fire missle while no enemy is around you. The plane will catch on fire, circle, and crash into a wall in the lowest area of the level, that leads to an underground tunnel. The suspended crate's opening faces this area. Follow the tunnel under the sewers, collect the weapons and health, and continue until you see a control panel attached to a large column in the middle of a circular room. Shoot the control panel and a message stating Yellow Jacket has been unlocked will appear. Yellow Jacket will appear inside the destroyed column.
Play as Warthog
At the Suburbs level, go to the entrance to the carnival. Turn left and jump off a hill to land on top of a building with a structure on top of it. Blow up the structure to reveal a hole in the building. Fall through the hole and destroy the panel. A message stating Warthog has been unlocked will appear.
Play as Axel
At the Freeway level, go toward the center of the level to find a large construction site with two big cranes. The one on the right is holding a pipe, the one on the left is holding a crate. Use the ridge between the cranes and the road and aim yourself at the control box of the left crane (at the center box). You only need to hit it once with some kind of missile. The crate will then lower into the construction yard. Shoot it to unlock Axel.
Play as ManSlaughter
At the Prison Passage level, exit the ship once it docks on land, go to the right (left if facing the ship). Follow the waterline until you reach some crates with a health pick-up. Shoot the crates until a ramp is formed. Go up the ramp and turn toward the side of the ship. Shoot the side of the ship until a opening appears. Enter the opening to find and unlock ManSlaughter.
Play as Minion
Successfully complete story mode with all regular and hidden characters to unlock Minion.
Warhawk's Rooftop level in multi-player mode
At the Junkyard level, shoot down the green Pizza Boy statue (near the Old Warplane and crane). His pizza box will fall near the vertical crusher and form a ramp. Go to the ramp and line yourself up to the crusher. When the crusher falls, use the ramp. When on top of the crusher, there will be a building you can drive through to get some weapons. Off the side of that will be a rotating black cube. Jump off to the black cube to unlock Warhawk's Rooftop level in multi-player mode.
Prison Passage level in multi-player mode
At the Suburbs level, go toward the downtown area, drive across the gaps, and stop on the second rooftop. Then, slowly turn toward the ocean and look for a power missle on top of the narrow roof nearby. Back-up your vehicle a bit on the current rooftop, and get a good start toward the other narrow rook with the power missle. After you pick-up the power missle, shoot the vent on top of the building to obtain a black cube that will unlock the Prison Passage level in multi-player mode.
Minion's Stadium level in multi-player mode
At the Downtown level, locate the set of buildings connected at the second story on one side of the river/bayou. You can find it easily when you drive between them, since there is a big section of wall that is very visible that you can shoot out to get to the elevators. There is one on each building. When facing the buildings from the river, take the left-hand elevator up. Then, circle around to the back of the building. Along the way you will notice that the ground changes color. About one car length to the left of that line is where you want to creep to the edge and barely fall off. You should hit the cube while falling. If not, you should be on a different level off of the ground - jump (press L1 + R1) to get the cube. It can be seen from the ground floor once you know where to look.
Elevators level in multi-player mode
At the Highway Loop level, go to the bridge with the gap in it. Go to the side opposite the long tunnel. Facing away from the bridge and to the left on the other side of the wall, you can see two round towers at what seems to be a powerplant. Hit the one closest to the bridge with a gas can. It will fall off and start rolling toward the bridge. Make sure you and no other enemies are in its path or it will break. It will slowly jump the bridge and will make a hole just inside the tunnel. You will find a black cube inside that will unlock the Elevators level in multi-player mode.
Power Plant level in multi-player mode
At the Snowy Roads level, go just beyond the barriers toward the cliff in the area with the restaurant, on the southern side of the level (to your right if you're facing toward the road in front of the restaurant). Carefully follow the edge of the level to find a black cube that will unlock the Power Plant level in multi-player mode.
Sewer level in multi-player mode
At the Skyscrapers level, go to the bottom of the crashed plane and to the left (if you were exiting the plane) is a small billboard. Shoot down the billboard and it will form a bridge between the gap of the two buildings. Place yourself in the center of the board and aim yourself toward the inner part of the hole. Depending on your vehicle, you will have to drive off at a different speed to get the black cube. Note: You will have to lose a life to get this black cube.
Skyscrapers level in multi-player mode
At Warhawk's Rooftop level, look for where the tankers are coming from on the Rooftop. Then, align your vehicle perpendicular to the building that has hangars that the tankers come out of on top. Drive full speed straight off the edge toward the tanker building to find a black cube that will unlock the Skyscrapers level in multi-player mode. This may take multiple attempts.
Raven's second special attack
While playing as Raven, highlight the special weapon icon, then press Up(3) to have Raven pop out the top of the car and attack the nearest opponent with a machine gun.
Axel's second special attack
While playing as Axel, highlight the special weapon icon, then press Up(3).
Minion's second special attack
While playing as Minion, highlight the special weapon icon, then press Up(3).
Jump: Press L1 + R1.
Freeze attack: Press Up, Down, Up.
Land mine: Press Right, Left, Down.
Charged land mine: Press Right, Left, then hold Down.
Invisibility: Press Left(2), Down(2).
Shield: Press Right(2), Down(2).
Rear fire: Press Left, Right, Down + Fire Weapon.
After destroying an enemy car, run over the flaming driver for a little boost of health.
Shoot the tankers while they are on the helipad. Wait for Warhawk to hover over the helipad and explode the tankers. Warhawk's shields will take damage. After doing that about four times, Warhawk's shields will be destroyed and the Tankers will stop appearing. Remember to restore your health often on the level, and hide when you need to. Also try using the "Satellite" weapon for major damage.
Electrocute men in Prison Passage level
On the Prison Passage level, you can run over a box marked "Danger High Voltage" and watch the three men who are sitting in chairs get electrocuted. They are near the front of the ship on a platform. The box is right in front of them.
Translated Minion codes
At the load screen for each level while playing as Minion, there are a bunch of numbers instead of words like with the other characters. These numbers can be translated into words. The formula used is 1=A, 2=B, 3=C, etc. Here are is what you get when you translate the numbers:
1. I do not think this is real.
2. I must speak in code or he will discover me.
3. We are trapped in his head.
4. This is how he sees the world, how Sweet Tooth sees his life, it is not real.
5. All of us are trapped in his head.
6. I miss the old colorful world.
7. We will return to old world one day.
8. In the real world my name is Marcus Kane.
Unlock WarHawk Helicopter.
In the scrap yard level (First level) Go find the compactor. Off to the left of it is a Mario Brother. (Big green statue)Blow it up anyway you can. I used sattelite. Pieces will fall everywhere. Use the pieces as a ramp to jump on top of the compactor and ride it up. You'll find health in the middle. Turn yourself to the control building at the top of the compactor. Turbo across and crash thru the building. Pick up the power up weapons then face back at the compactor. Look at the left of your screen and you will see and orb with lights buzzing around it. Jump and hit the orb and you've unlocked warhawk. Good Luck
-from: Strictlybiznez aka GT firstname.lastname@example.org
Special Freeze Attack
While playing the game hold all the shoulder buttons and press RIGHT, LEFT, UP.
Unlock "Freeway" Level
Select your best vehicle and go into Endurance Mode. Select the Snowy Roads level. Proceed to destroy ten vehicles without dying once. This will unlock the Freeway stage.
Unlock "Mini-Suburbs" Level
Select your best vehicle and go into Endurance Mode. Select the Drive-In level. Proceed to destroy ten vehicles without dying once. This will unlock the Mini-Suburbs level.
Unlock "Prison Ship" Level
Select your best vehicle and go into Endurance Mode. Select the Zorko Bros. Junkyard level. Proceed to destroy fifteen vehicles without dying once. This will unlock the Prison Ship stage.