Costume Quest PS3 Cheats

Trophies:

Bronze trophies
Battle Buds - Defeat a monster in combat with a friend by your side.
Binary Bouncer - Use the Robot Costume to boost off of 15 different ramps.
Do the Monster Bash - Get the jump on 10 different by pail bashing them to initiate combat.
Dressed to Quest - Acquire 5 Costumes.
The Last Gourdian - Acqure the Pumpkin Costume.
Downsized! - Beat BoJonn in battle.
Dozer Dodger - Defeat Mextel in battle.

Silver trophies
Master of Disguise - Use every Costume Ability in battle.
Sweet Justice - Complete the game.
All Decked Out - Collect all Creepy Treat Cards.
They'll Be Worth A Lot Someday - Collect all Battle Stamps.

Gold trophies
Mask-O'-Raider - Complete all Quests in the game. 

"Grubbins On Ice" trophies:

Bronze trophies
Jeepers Peepers - Acquire the Eyeball Costume.

Silver trophies
Birdbrain Beatdown - Defeat Araxia in battle.
Playin' Hooky - Use the Pirate hook on 5 unqiue ziplines.
Short Stack - Find the mysterious visitor in the cliffs of Repugia.

Gold trophies
Revolutionary Hero - Complete all quests in Repugia.