At the title screen, press A, B, A, X, A, B(2).Boss Rush mode
At the title screen, press Right(2), B, RB, Right(2), B, RB.Zombie mode
At the title screen, press Down, Up, Right, Down, Up, Right, Down, Up, Right(3).Sound Check level
In "Score Ranking" in the pause menu on Overworld, press LB(3), RB(3), LB, RB to unlock the Sound Check level.Both players can select the same character
At the title screen, press Down, RB, Up, LB, Y, B.Scott's Power Of Love Sword
At the title screen, press X(3), A, B, Y.Coin sprites changed to animal sprites
At the title screen, press Up(2), Down(2), Up(4).Trade life for $50
While playing the game, hold LT + RT and press Up(2), Down(2), Left, Right, Left, Right, B, A.Play as Mr. Chau
When you see Mr. Chau on a random stage, go to that stage to fight him. Defeat him to unlock him as a striker.
Successfully complete the game with Kim, Ramona, Scott, and Stills to unlock Nega-Scott.Hidden money and shortcut
At the start of Level 5: "Halloween Party", move backwards to the door with the stars on it to access a secret Subspace Highway. You will collect money and exit the highway past the halfway point of the level. Note: You can pause the game and select "Return To Map" immediately after collecting all the coins to not skip ahead but still get the extra money. -From: MrStilwaterMobile's secret house
Get the key in Level 6, and fight some wolverines. Notice the small house in the background with a path. Keep walking along the top of the screen to enter a secret path that leads to Mobile's house. Mobile sells a special training manual for $57.50 that unlocks a special move.Wallace Wells' secret shop
Go to the shopping district in the Frozen Suburbs. Find the ramp that leads down to an underpass. Go up to the star painted on the rear wall. A cement panel will open, allowing access to a shop that sells expensive powerful items.Video store items
Pay the $504.25 fine at the video store to unlock the corresponding items for purchase for $4.95. Note: You will have to pay the fine again if you play as a different character.
- Alien vs. T-Rex: Gives +20 STR
- Alone And Disturbed: Gives +1,500 experience points
- I Love Your Boyfriend: Gives +320 XP, +15 DEF, +15 WP
- Seven Shaolin Masters: Gives +100 XP, +10 DEF, +10 SPD, +10 WP, +10 STR
- The Mystical Head: Extra life, maximum of nine
Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
- New Challenger (10 points): Defeat Matthew Patel without losing a life.
- Twin Dragons (10 points): Defeat the Twins simultaneously.
- Dirty Trick (10 points): Defeat an enemy by throwing an object at him while hes already down.
- Invulnerable (10 points): Play through a World and reach the boss without getting hit.
- Get The Girl (10 points): Clear the game once with Scott.
- The Power Of Friendship (20 points): In a multiplayer game, reanimate another player at least 25 times.
- Gourmet (20 points): Eat every food items.
- Vigilante (20 points): Defeat all enemies in a World, excluding the boss.
- One Man Army (20 points): Clear the game in single player on the "Supreme Master" difficulty setting.
- Shopaholic (20 points): Buy all the items of a shop.
- Armed And Dangerous (20 points): Defeat at least 200 enemies using interactive objects.
- "Chaudown" (30 points): Unlock and call all strikers.
The following achievements require the "Knives Chau" bonus downloadable content:
- It's All In The Reflexes (10 points): Caught a flying object at least 25 times with Knives.
- Ninja Somersault (20 points): Performed at least 10 consecutive head stomps successfully with Knives.
- Speed Run (20 points): Cleared the game in 90 minutes or less with Knives.