Full list of all 13 Lanternium achievements worth 1,000 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox One.
Finish a level
Finish 10 levels
Finish 30 levels
Switch a color of lantern 72 times
Switch a color of lantern 150 times
Fall behind an edge 15 times
Fall behind an edge 30 times
Pick up one key
Pick up one scroll
Make 1000 steps
Collect 30 cookies
Pick up firefly
Pick up 72 fireflies