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