Full list of all 30 Dust: An Elysian Tail achievements worth 400 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox 360.
Opt out of putting poison ivy into Gianni's laundry
Complete the Game on Tough or Hardcore setting
Defeat General Gaius
Destroy every enemy Cannon
Hang out with Twelve Friends in the Sanctuary
Fulfill Bopo’s wish for snow
Complete 20 Sidequests
Earn a Four-Star Rating in EVERY Challenge Arena
Defeat Baron Kane
Bug Matti
Defeat Lady Tethys
Complete all Fale Quests
Earn a Four-Star Rating in any Challenge Arena
Complete 10 Sidequests
Kill an enemy with the slide attack
Craft an item from a blueprint
Meet Haley
Complete 5 Sidequests
Reign chaos by putting poison ivy into Gianni's laundry
Successfully Parry with less than 10% health remaining
Successfully complete a 1000+ hit combo
Kill 500 Enemies
Defeat Fuse
Unlock a Cage and Rescue a Friend
Simultaneously Kill 6 Enemies with a Single Bomb
Successfully complete a 200+ hit combo
Level Up by Assigning Skill Gems
Use the DUST STORM on Fidget's Projectiles
Unlock a Treasure Chest
Pick Up an Ability Orb