Here is the full list of all 29 Aplestia: Retold achievements.
Arrive in Melanda Town at the start of the game.
Locate and defeat the monster in the hole in Melanda Town.
Save the about-to-be gemified person in Gemmia Cave.
Locate and save the dog in Gemmia Cave.
Open the Stone Door inside Gemmia Cave, explore and clear the dungeon.
Find and collect all four Botania plants in Mekeni Forest.
Save the about-to-be gemified person in Mekeni Forest.
Open the Stone Door inside Mekeni Forest, explore and clear the dungeon.
Reached Kindynos Valley for the first time.
Locate and save the husband in the basement.
Locate and defeat the four remaining Dark Morphing Witches.
Defeat the last Dark Morphing Witch in Kindynos Valley.
Solve the statue's riddles in the Spiral Forest Clearing.
Find and defeat the rampaging gem goat in Ammolite Cavern.
Find the ancient Desdemona's tomb somewhere in Kindynos Cave.
Save the about-to-be gemified person in Kindynos Cave.
Open the Stone Door in Kindynos Valley, explore and clear the dungeon.
Save the about-to-be gemified person in Doctor Gertude's basement.
Find all 20 hubcaps scattered inside the Clockwork Tower.
Defeat the Clockwork King.
Find a proper gift for Desdemona and leave it as an offering on her tomb.
Found all 6 Chrysoberyls on Aplestia Island!
Find the four most powerful weapons on Aplestia!
Find all the seamingly invisible super secret rooms.
Find all plain, secret rooms. There's also a helping cue in their vicinity!
Accept Doctor Gertrude's quest in the Otherworld and complete it.
Find the password to remove the blockade and acquire the Aetherovamon Mail, in the Otherworld.
Be victorious in the last boss battle and rid Aplestia of the Darkness!
Completed at least 25 side quests during the travels throughout Aplestia Island!