Full list of all 42 Skylanders Imaginators achievements worth 1,000 gamerscore. It takes around 12-15 hours to unlock all of the achievements on Xbox One.
Complete Cradle of Creation on any difficulty
Complete Mushroom River on any difficulty
Complete Scholarville on any difficulty
Complete Shellmont Shores on any difficulty
Complete Sky Fortress on any difficulty
Complete Fizzland on any difficulty
Complete Golden Arcade on any difficulty
Complete Dragon Temple on any difficulty
Complete Abandoned Amusement Park on any difficulty
Complete The Lair of Kaos on any difficulty
Complete 3 Adventures in Mausoleum of Madness or Danger Dungeon
Complete 3 Adventures in Battlefield Blitz, the Battleship, or Operation: More War
Complete 3 Adventures in Calamity City or Trouble Town
Unlock your first Sensei Elemental Realm
Cradle of Creation: Complete the Gong Challenge without taking any damage
Mushroom River: Leave Eruptor on a raft to ride down the river alone
Scholarville: Explode 15 Exploding Barrels and Crates
Shellmont Shores: Eat five bunches of bananas
Sky Fortress: Use the wrecking ball to destroy every crate on the Vulture Cargo Ship
Fizzland: Remove 9 trees with fizzy bottles
Golden Arcade: Score over 4000 points in the Candy Cake Gumdrop Land video game
Dragon Temple: Visit every island when descending from the temple
Abandoned Amusement Park: Destroy 25 falling boulders
The Lair of Kaos: Break Kaos' Gameshow scoreboard by scoring too many points
Complete Story Mode on any difficulty setting
Take a Selfie on the Hall of Selfies
Complete all three Star Objectives on any chapter
Beat 10 Troll Radio challenges
Solve 10 Lock Puzzles
Win 10 Creation Clash Matches
Complete 3 Battle Gong challenges
Go down a rabbit hole on the M.A.P.
Earn 5 Objective Stars
Earn 10 Objective Stars
Earn 20 Objective Stars
Level up any Sensei to level 20
Open a Sensei Shrine
Open 50 Imaginite Chests
Acquire a Rare weapon and equip it to an Imaginator
Acquire an Epic weapon and equip it to an Imaginator
Acquire an Ultimate weapon and equip it to an Imaginator
Equip an Imaginator with all Ultimate Gear