Costume Quest Cheats - PlayStation 3

Unlock Trophies
All Decked Out (Silver) - Collect all Creepy Treat Cards.
Dressed to Quest (Bronze) - Acquire 5 Costumes.
Mask-O'-Raider (Gold) - Complete all Quests in the game.
Master of Disguise (Silver) - Use every Costume Ability in battle.
Battle Buds (Bronze) - Defeat a monster in combat with a friend by your side.
Binary Bouncer (Bronze) - Use the Robot Costume to boost off of 15 different ramps.
Do the Monster Bash (Bronze) - Get the jump on 10 different monsters by pail bashing them to initiate combat.
Downsized! (Bronze) - Beat BoJonn in battle.
Dozer Dodger (Bronze) - Defeat Mextel in battle.
Sweet Justice (Silver) - Complete the game.
The Last Gourdian (Bronze) - Acqure the Pumpkin Costume.
They'll Be Worth A Lot Someday (Silver) - Collect all Battle Stamps.

Additionally, there are five Grubbins on Ice DLC trophies:

Jeepers Peepers (Bronze) - Acquire the Eyeball Costume.
Playin' Hooky (Silver) - Use the Pirate hook on 5 unqiue ziplines.
Birdbrain Beatdown (Silver) - Defeat Araxia in battle.
Revolutionary Hero (Gold) - Complete all quests in Repugia.
Short Stack (Silver) - Find the mysterious visitor in the cliffs of Repugia.