Here is the full list of all 45 Atelier Sophie: The Alchemist of the Mysterious Book achievements.
Collected all trophies.
Defeated the Demon Lord.
Learned every single recipe.
Walked in on Horst playing the piano.
Got good at playing the piano.
Raised friend level of all party members to maximum.
The donation to church reach the target figure which makes Pamela very happy.
Defeated the Light Elemental.
Given a challenge by Plachta.
Finished the battle, and returned to the atelier.
Defeated Luard.
Defeated Yasuk.
Defeated Dorak.
Enjoyed Monika's concert.
Saw Elise without her glasses on.
Saved up 100,000 Cole.
Slept for 3 whole days.
Witnessed Logy find new determination.
Defeated Nazarus.
Reached maximum alchemy level.
Changed Plachta's appearance.
Satisfied Plachta during Doll Making.
Saw Oskar carrying Monika in his arms.
Cauldron of Knowledge stolen by Meklet and Atomina.
Enjoyed a waterside vacation with Leon.
Went on a date with Tess.
Harol showed you the repaired clock.
Found out the machine box is a music box.
Reached maximum Request rank.
Reached maximum adventurer level.
Put on a new outfit.
Received a present.
Turned Plachta into a doll.
Inspected a barrel.
Failed to turn Plachta into a human.
Enhanced a weapon or armor.
Crafted a weapon or armor.
Unleashed a special attack.
Found the identity of the voice in the cabin.
Registered an item at the duplication shop.
Saved by a mysterious person.
Something bad happened while traveling.
Purchased a rumor.
Defeated a Puni in your first battle.
Met Plachta.