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