Infinite health and turbo
 
 Note: The controls must be set to the "Classic" option for this 
 code to work. 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.  
 
 
 Infinite weapons
 
 Note: The controls must be set to the "Classic" option for this 
 code to work. 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.  
 
 
 
 One-hit kills
 
 Note: The controls must be set to the "Classic" option for this 
 code to work. 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.  
 
 
 Mega machine guns
 
 Note: The controls must be set to the "Classic" option for this 
 code to work. 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
 
 Note: The controls must be set to the "Classic" option for this 
 code to work. While playing a game, hold L1 + R1 + L2 + R2 and quickly 
 press Right, Left, Up.  
 
 
 Exchange weapons for health
 
 Note: The controls must be set to the "Classic" option for this 
 code to work. 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. 
 
 
 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.  
 
 
 
 Reversed special
 
 While playing as The Preacher, John Doe, Mr. Grimm, Dollface, Bloody 
 Mary, Raven, or Black, highlight the special weapon icon, then quickly 
 press Up, Left, Right, Down, L2.  
 
 
 No Face's secret special attacks
 
 While playing as No Face, highlight the special weapon icon, then 
 quickly press Up(3) to make his front end light up with electricity. 
 This also works by substituting Left(3), Right(3), or Down(3) for 
 the corresponding side. While playing as No Face, highlight the 
 special weapon icon, then quickly press Down(3), Up(3) to have a 
 purple shield appear instead of a silver one. To fire the purple 
 shock you must be close to someone, and then press L2.
 
 
 
 
 Raven's secret special attack
 
 While playing as Raven, highlight the special weapon icon, then 
 quickly press Up(3) to have Raven pop out the top of the car and 
 attack the nearest opponent with a machine gun.  
 
 
 Axel's secret special attack
 
 While playing as Axel, highlight the special weapon icon, then quickly 
 press Up(3).  
 
 
 Minion's secret special attack
 
 While playing as Minion, highlight the special weapon icon, then 
 quickly press Up(3).  
 
 
 Special attacks
 
 
 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.
 
 
 
 
 
 Extra health
 
 After destroying an enemy car, run over the flaming driver for a 
 little boost of health.
 
 
 
 Defeating Warhawk
 
 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.