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