Here is the full list of all 50 Ravenlok achievements worth 1,000 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox One.
Complete the game
Attend the final tea party
Level up to level 20
Wear the Queen's Crown
Defeat Dreda the Caterpillar Queen
Enter the Queen's Chamber
Unlock all Mirrors
Collect all 18 Figurines
Defeat Yoth the Slayer
Get the third heart relic
Wear the Flower Crown
Defeat Flora Esmerelda
Buy 20 bombs
Solve the Animal Puzzles in High Garden
Witness the Queen's abduction
Get the second heart relic
Wear the Top Hat
Activate the Planetarium in the Clock Tower
Defeat Eagleblade Prime
Defeat the Woodlock Dodo
Unlock 4 combat Skills
Defeat Shani the Sorceress
Defeat Helios the Golden
Buy 30 potions
Level up to level 10
Solve the Runestone Puzzle in the Labyrinth
Complete Bob the Frog's quiz
Speak with Alina the Crane at the Labyrinth entrance
Get the first heart relic
Wear the Witch's Hat
Defeat Thorlaron the Hydra
Sleep in the Witch's bed
Open the slimy chest!
Defeat Ugsak the Glutton
Complete the 'Tea Sets' quest
Complete the 'Shining Emblem' quest
Defeat the Tweedle Twins
Defeat the Harlequin ambush in the Mask Mansion
Wear the Masquerade Mask
Open the Hedgehog's shop
Defeat Buvador the Bison
Defeat the Weeping Fungi
Complete the 'Awaken the Spirits' quest
Meet the Queen in the Mushroom Forest
Complete Combat Training
Dance for the first time
Speak with Finn in the Stone Garden
Enter the Old Barn
Pet your dog!
Name your Character