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