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