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