Here is the full list of all 53 Atelier Escha & Logy: Alchemists of the Dusk Sky DX achievements.
All Achievements acquired.
Fulfilled an important promise.
Saw the complete girl's association.
Decided to work with Linca and Marion in the development team.
Helped Threia with her research.
Completed Escha's story.
Witnessed Micie's elegant shopping.
Harvested apples with Nio and Clone.
Witnessed the twilight survival instinct of Escha.
Started Escha's story.
Escha saw Logy off with a smile.
Saw the complete men's association.
Went on a search for treasure with Reyfer and Harry.
Helped Lucille save people on the frontier.
Completed Logy's story.
Journeyed to the Ends of the Earth with Awin.
Challenged the king of dragons, and proved humanity's worth.
Destroyed the giant device used by a girl.
Reached combat level 99. Are there any worthy foes left?
Defeated the giant alchemic creature in the Unexplored Ruins, and found the ruin's secret.
Saved the girl's soul bound to Geosis.
Stopped Flameu after she released her true power.
Participated in Duke's eating contest.
Encountered Solle and Colland's awkward meal.
Saw the "Ends of the Earth" with Awin.
Saw an unexpected side of Threia and Marion.
Cleared and reported 9th term assignment.
Watched Linca's reunion.
Read a difficult reference book with Lucille.
Cleared and reported 8th term assignment.
Reached alchemy level 50. You're now an expert!
Completed a true airship.
Gathered lithograph fragments, and discovered an ancient legend.
Fell victim to a classic ruins trap with Reyfer.
Cleared and reported 7th term assignment.
Logy retook his dreams with Escha's support.
Built a basic airship.
Cleared and reported 6th term assignment.
Encountered Katla and Harry's fateful meeting.
Cleared and reported 5th term assignment.
Destroyed the Slag guarding the ruins interior.
Watched Duke and Colland's manly struggle.
Planned for the future with the development team.
Cleared and reported 4th term assignment.
Eliminated the behemoth living at the water spring.
Learned Logy was greatly injured in a past accident.
Cleared and reported 3rd term assignment.
Acquired a worn down air balloon. You became an alchemist of the sky…maybe.
Cleared and reported 2nd term assignment.
Found out that Wilbell is a real magician.
Cleared and reported 1st term assignment.
Escha and Logy's new life begins.
Started Logy's story.