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