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.
Complete the Game on Tough or Hardcore setting
Opt out of putting poison ivy into Gianni's laundry
Hang out with Twelve Friends in the Sanctuary
Earn a Four-Star Rating in EVERY Challenge Arena
Earn a Four-Star Rating in any Challenge Arena
Defeat General Gaius
Complete 20 Sidequests
Destroy every enemy Cannon
Fulfill Bopo’s wish for snow
Successfully complete a 1000+ hit combo
Complete all Fale Quests
Bug Matti
Defeat Baron Kane
Complete 10 Sidequests
Defeat Lady Tethys
Kill an enemy with the slide attack
Complete 5 Sidequests
Successfully complete a 200+ hit combo
Craft an item from a blueprint
Reign chaos by putting poison ivy into Gianni's laundry
Defeat Fuse
Kill 500 Enemies
Simultaneously Kill 6 Enemies with a Single Bomb
Meet Haley
Successfully Parry with less than 10% health remaining
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