Steam achievements:
ACHIEVEMENT – HOW TO UNLOCK
All Decked Out – Collected all Creepy Treat Cards.
Battle Buds – Defeated a monster in combat with a friend by your side.
Binary Bouncer – Used the Robot Costume to Boost off of 15 different ramps.
Birdbrain Beatdown – Defeat Araxia in battle.
Chompin’ Champ – Won all prizes in Bobbing for Apples.
Do the Monster Bash – Got the jump on 10 monsters.
Downsized! – Defeated BoJonn in battle.
Dozer Dodger – Defeated Metxel in battle.
Dressed to Quest – Acquired 5 Costumes.
Jeeper Peepers – Acquire the Eyeball costume.
Leave some for the rest of us! – Collected a total of over 4,000 candies.
Make it Work – Won the Autumn Haven Mall Costume Contest.
Mask-O’-Raider – Completed all Quests in the game.
Master of Disguise – Used every Costume Ability in battle.
Playin’ Hooky – Use the Pirate Hook on 5 unique ziplines.
Revolutionary Hero – Complete all quests in Repugia.
Short Stack – Find the mysterious visitor in the cliffs of Repugia
Sweet Justice – Finished the game!
The Last Gourdian – Acquired the Pumpkin Costume.
They’ll be worth a lot someday – Collected all Battle Stamps.
Tisn’t the Season – Play Costume Quest on Christmas.
in PC Cheats