Here is the full list of all 45 Atelier Firis: The Alchemist and the Mysterious Journey DX achievements.
Unlocked All Achievements.
Defeated Sophie during the license exam.
Enjoyed the Flussheim festival.
Visited every area.
Melted snow on a mountain.
Departed on a historical journey with Kald.
Joined Oskar to befriend plants around the world.
Decided to go on a never-ending, mysterious journey.
Departed on an alchemic journey with Sophie.
Joined Revy's quest to become the strongest.
Opened an atelier with Ilmeria.
Decided to join Drossel's puppet show.
Witnessed how much Angriff can drink.
Submitted a lot of data.
Defeated the Avenger.
Became a teacher at Angriff's new school.
Decided to master alchemy.
Defeated the Sleeper of the Depths.
Watched Revy cook at a food stall.
Listened to a song of appreciation by Luis.
Held a puppet show in Ertona.
Defeated Twin Gods Emuel.
Completed a lot of chain quests.
Made amends with Ilmeria.
Built a ship that can fly.
Decided what to do in life.
Departed on a whimsical journey with Liane.
Came up with a lot of recipes.
Was embraced whole-heartedly by Liane.
Defeated Logius.
Defeated Palmyra.
Enjoyed bathing in a hot spring.
Used the Corneria doll to refill items.
Passed the official alchemy exam.
Wore the clothes your mother sent from home.
Built a ship that can cross a waterspout.
Performed advanced Synthesis for the first time.
Obtained a letter of recommendation.
Used Atelier Making to redecorate.
Completed the map of an area.
Changed costumes.
Set up your Atelier for the first time.
Discovered a landmark.
Checked many barrels.
Met Sophie and Plachta.