Press X, Circle, X, Square, X, Circle(2) at the title screen.
Boss Rush mode
Press Right(2), Circle, R1, Right(2), Circle, R1 at the title screen.
Both players can select the same character
Press Down, R1, Up, L1, Triangle, Circle at the title screen.
Coin sprites changed to animal sprites
Press Up(2), Down(2), Up(4) at the title screen.
Hearts appear when hitting opponent
Press X, Circle, X, Circle, Square, X, Circle, , Circle at the title screen.
Hidden money and shortcut
At the start of level 5, "The Party", move backwards to the door with the star to access a secret Subspace Highway. You will collect money and exit the highway past the halfway point of the level.
Knives Chau: Trophies
Complete the following tasks to unlock PlayStation 3 trophy rewards.
Trophy
How to unlock
It's All In The Reflexes (Bronze)
Catch a flying object at least 25 times with Knives.
Ninja Somersault (Gold)
Perform at least 10 consecutive head stomps successfully with Knives.
Speed Run (Silver)
Clear the game in 90 minutes or less with Knives.
Mobile'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 and to enter a secret path. Note: Mobile sells a special training manual for $57.50 that unlocks a special move.
Mr. Chou
When see Mr Chou on a random stage, go to that stage to fight him. Defeat him to unlock him.
Online Multiplayer and Wallace Pack
Trophy
How to unlock
And - - - It's a Wrap!(Bronze)
Clear the game with Wallace Wells.
Everybody wants to play(Bronze)
Played online with all characters at least once (including Wallace Wells).
Wallace the novice!(Bronze)
Completed your first online match with Scott Pilgrim Online Multiplayer and Wallace pack.
Wallaciraptor!(Silver)
Knockout 200 enemies in online mode with Scott Pilgrim Online Multiplayer and Wallace pack.
Play as Nega-Scott
Successfully complete the game as Kim, Stills, Ramona, and Scott.
Sacrifice life for $50
Hold L2 + R2 and press Up(2), Down(2), Left, Right, Left, Right, Circle, X at the title screen.
Scott's Heart Sword
Press Square(3), X, Circle, X, Square, Triangle at the title screen.
Secret Shop
In the first level shortly after the shopping district (when you enter the underground car tunnel) there will be a star on the wall near where the cars drive by, go up into that star and a hidden doorway will open leaving you with some of the best items in the game to purchase.
Sound test
Press L1(3), R1(3), L1, R1 at the "Leaderboards" screen.
Trophies
Complete the following tasks to unlock PlayStation 3 trophy rewards.
Trophy
How to unlock
"Chaudown" ( Bronze )
Unlock and call all strikers.
Armed And Dangerous ( Bronze )
Defeat at least 200 enemies using interactive objects.
Dirty Trick ( Bronze )
Defeat an enemy by throwing an object at him while he's already down.
Get the Girl ( Gold )
Clear the game once with Scott.
Gourmet ( Bronze )
Eat every food items.
Invulnerable ( Silver )
Play through a World and reach the boss without getting hit.
New Challenger ( Bronze )
Defeat Matthew Patel without losing a life.
One Man Army ( Silver )
Clear the game in single player on the "Supreme Master" difficulty setting.
Shopaholic ( Bronze )
Buy all the items of a shop during the same visit.
The Power of Friendship ( Bronze )
In a multiplayer game, reanimate another player at least 25 times.
Twin Dragons ( Silver )
Defeat the Twins simultaneously.
Vigilante ( Silver )
Defeat 1000 enemies.
Video store items
Pay the $504.25 fine at the video store to unlock the corresponding items for purchase for $4.95. Note: After leaving the store you will have to pay the fine again to reenter.
The Mystical Head: Extra life, maximum of nine.
Seven Shaolin Masters: Gives +100 XP, +10 DEF, +10 SPD, +10 WP, +10 STR.
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.
Wallace Wells' secret shop
Go to the shopping district in the Frozen Suburbs. Find the ramp that leads down down to an underpass. Approach the star painted on the rear wall. A cement panel will open, allowing access to a shop that sells expensive powerful items.
Zombie mode
Press Down, Up, Right, Down, Up, Right, Down, Up, Right(3) at the title screen.