Here is the full list of all 30 Dust: An Elysian Tail achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Hang out with Twelve Friends in the Sanctuary
Destroy every enemy Cannon
Opt out of putting poison ivy into Gianni's laundry
Bug Matti
Complete 20 Sidequests
Earn a Four-Star Rating in EVERY Challenge Arena
Fulfill Bopo’s wish for snow
Complete the Game on Tough or Hardcore setting
Defeat General Gaius
Complete all Fale Quests
Complete 10 Sidequests
Defeat Baron Kane
Complete 5 Sidequests
Successfully complete a 1000+ hit combo
Kill an enemy with the slide attack
Defeat Lady Tethys
Reign chaos by putting poison ivy into Gianni's laundry
Simultaneously Kill 6 Enemies with a Single Bomb
Craft an item from a blueprint
Earn a Four-Star Rating in any Challenge Arena
Defeat Fuse
Kill 500 Enemies
Meet Haley
Successfully complete a 200+ hit combo
Successfully Parry with less than 10% health remaining
Unlock a Cage and Rescue a Friend
Use the DUST STORM on Fidget's Projectiles
Level Up by Assigning Skill Gems
Unlock a Treasure Chest
Pick Up an Ability Orb