Here is the full list of all 18 The Myriad achievements.
Begin your journey into the labyrinth.
Find the first page to the scattered diary.
Collect 3 pages of the diary.
Collect 6 pages of the diary.
Find all of the pages of the scattered diary.
Find the explorers hand-crafted artifact.
Find the Bracelet artifact.
Find the eye artifact.
Find all of the artifacts.
Find a hidden gem.
find all of the gems.
Collect the key from the sealed chest.
Walk a mile in the Labyrinth.
Find the Primm Butterfly
Find the first Primm Flower
Find all of the Primm Flowers
Unlock the sealed door.
Find the treasure lying at the end of the labyrinth.