Full list of all 17 Costume Quest trophies - 8 bronze, 7 silver and 2 gold. It takes around 5-6 hours to unlock all of the trophies in the base game.
The base game contains 12 trophies, and there is 1 DLC packs containing 5 trophies.
Defeat a monster in combat with a friend by your side.
Use the Robot Costume to Boost off of 15 different ramps.
Get the jump on 10 different monsters by pail bashing them to initiate combat.
Acquire 5 Costumes.
Acquire the Pumpkin Costume.
Defeat BoJonn in battle.
Defeat Metxel in battle.
Beat the game.
Use every Costume Ability in battle.
Collect all Creepy Treat Cards.
Collect all Battle Stamps.
Complete all Quests in the game.
Acquire the Eyeball Costume.
Use the Pirate hook on 5 unique ziplines.
Defeat Araxia in battle.
Complete all quests in Repugia.
Find the mysterious visitor in the cliffs of Repugia.