|All Clothes||Press L1, L1, R1, L1, L1, L1, R1, R1|
|All gym grapple moves (not shown in stats)||Hold L1 then press Up, Left, Down, Down, Triangle, Square, X, X|
|All Hobo fighting moves (not shown in stats)||Hold L1 then press Up, Left, Down, Right, Triangle, Square, X, Circle|
|Full Health||Hold L1 then press R2, R2, R2|
|All Weapons||Hold L1 then press Up, Up, Up, Up|
|Infinite Ammo||Hold L1 then press Up, Down, Up, Down|
|Big Money||Hold L1 then press Triangle, Square, Circle, X|
|Refill Ammo||Hold L1 then press Up, Up|
Complete the following tasks to get the corresponding costume.
|Black ninja costume||Completely fill your yearbook|
|Black skate shoes||Walk at least 50 km|
|BMX champion costume||Complete a bike race|
|Boxing costume||Beat the Boxing or Prep Challenge|
|Crash helmet||Get 1st in the Kart Race at the carnival|
|Dunce hat||Turn on all the showers in the boy's locker room|
|Edna mask||Destroy 19 tombstones during Halloween|
|Fast food costume||Finish the Burger Joint errand in Bullworth vale|
|Firefighter's helmet||Pull the fire alarm twenty times|
|Gnome costume||Smash all the garden gnomes|
|Gold suit||Buy all the clothing|
|Green ninja costume||Hit 1,000 targets with projectiles|
|Grotto Master costume||Collect all G&G cards|
|Jimmy's Skeleton costume||Finish 'The Candidate' to unlock 'Halloween'|
|Orderly uniform||Finish 'Finding Johnny Vincent' in chapter 5|
|Pirate hat||Beat up the pirate on an island near the beach house|
|Prison uniform||Finish all the detention mini-games|
|Pumpkinhead mask||Destroy all 27 pumpkins during Halloween|
|Red ninja costume||Complete 'The Big Prank' during Halloween|
|School mascot costume||Finish 'Nice Outfit' in chapter 4|
|Tiny swimsuit||Beat the preppie's swim time at the beach|
|Wrestling uniform||Finish Gym 1|
|Werewolf Mask||Found in a locker.|
|Yellow ninja costume||Get 1,000 knockouts|
Getting Pumpkins and Tombstones:
During Halloween, you can get a bonus from finding and smashing all the pumpkins and tombstones scattered around. If you miss some, don't worry. In the next and last mission of the chapter, when you go into the school's basement, you can find the pumpkins you missed in the boiler room. Later on, after unlocking the preppie part of town, next to the asylum you can find a warehouse containing all the tombstones you missed as well.
Double your tickets:
If you finish photography class, you can get twice the tickets at the fair.
Get old bikes from shop:
After beating shop 5 you can still get the shop 4 bike even though you earned the shop 5 bike. To do so you will need to go in front of the preppies boxing club, then go to the right of the building. when you get to the right side of the building(make sure you are on some kind of bike) spin in a circle by holding the left joystick all the way to the right. After a while you will see a bike appear by the wall. it might take a couple of tries but after a while the blue bike from shop 4 will appear.
Thanks to Revolution Readers dew, dman, flyingiguana, Billy, Carlos Velasquez Corleto, Scottman and RASHO!