Full list of all 18 Costume Quest 2 trophies - 15 bronze and 3 silver. It takes around 6-8 hours to unlock all of the trophies on PlayStation 3.
Finished the game having fought every battle with Candy Corn in your party
Completed all quests in the game
Used the clown horn 1000 times
Tried every Creepy Treat Card in combat
Used every costume special in combat
Got the liberty kids to bust a move
Found the Solar System
Collected all Creepy Treat Cards
Restored the timeline to save Halloween
Defeated Ophirion
Found the Wolfman
Mastered all combat techniques from Corvus
Used the Pterodactyl Costume to flap 10 flappy things
Defeated Kronoculus and his Kronys
Collected over 4 thousand candies
Bashed 10 Monster Patrols
Upgraded 3 costumes
Tried on 5 different costumes