Full list of all 31 The Secret Order 5: The Buried Kingdom achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
You found every morphing object
You found every collectible item
You re-energized the central crystal
You saved the Buried Kingdom from being swallowed by the sea
You collected every Lava Dragon Egg
You're the best friend anyone could wish for
Well done! You made it out to the seabed
You entered the crystal
Well done! You restored order to the Buried Kingdom!
You finished every Minigame without skipping any
You freed Windy from captivity
You finished every HOP without using any hints
You collected every Blue Dragon Egg
You acquired the tiara
Well done! You saved the princess' life
You collected every Purple Dragon Egg
You finished ten HOPs without using any hints
You collected every Green Dragon Egg
You restarted the furnace
You revealed a pathway through the forest
You finished 10 Minigames without skipping any
You completed a Minigame without skipping it
You finished a HOP in 60 seconds without using any hints
You extinguished the fire in Julie's house
You revealed the Dragon Eye Amulet's special ability
You revealed the coordinates of the Buried Kingdom
You entered the Buried Kingdom
Droi Helped you for the first time!
Well done! You helped Pomelo and his Dragon reconcile
You obtained the Dragon Eye artifact
You became friends with Droi