Here is the full list of all 16 Grabitoons! achievements.
You have unlocked the Tank set!
You have unlocked the Fairy set!
You have unlocked the Cleopatra set!
You have unlocked the Samurai set!
You have unlocked the Mage set!
You have unlocked the Baseball set!
You have unlocked the Cleaner set!
You have unlocked the Prisoner set!
You have unlocked the Vampiric set!
You have unlocked the Mayhem set!
You have unlocked the Witch set!
You have unlocked the Djinn set!
You have unlocked the Mermaid set!
You have unlocked the Bouncer set!
You have unlocked the Elf set!
You have unlocked the Werewolf set!