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