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.
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
Defeat Baron Kane
Earn a Four-Star Rating in EVERY Challenge Arena
Complete 20 Sidequests
Earn a Four-Star Rating in any Challenge Arena
Successfully complete a 1000+ hit combo
Bug Matti
Defeat Lady Tethys
Kill an enemy with the slide attack
Complete 10 Sidequests
Complete all Fale Quests
Complete 5 Sidequests
Defeat Fuse
Craft an item from a blueprint
Opt out of putting poison ivy into Gianni's laundry
Reign chaos by putting poison ivy into Gianni's laundry
Simultaneously Kill 6 Enemies with a Single Bomb
Meet Haley
Kill 500 Enemies
Successfully Parry with less than 10% health remaining
Successfully complete a 200+ hit combo
Unlock a Cage and Rescue a Friend
Level Up by Assigning Skill Gems
Use the DUST STORM on Fidget's Projectiles
Unlock a Treasure Chest
Pick Up an Ability Orb