Here is the full list of all 48 Atelier Sophie 2: The Alchemist of the Mysterious Dream achievements.
Unlocked all achievements.
Defeated all giant enemies.
Reached the maximum Alchemy Level with both Sophie and Plachta.
Conducted an extensive barrel inspection.
Harvested crops grown from every variety of seeds and in every greenhouse environment at least once.
Created an item with 999 quality.
Witnessed the end of a dream.
Devised all possible recipes.
Saved Elvira from the Groll.
Defeated Frenzied Elvira on Very Hard difficulty or higher.
Activated the effects of talismans 15 times.
Journeyed through Elvira's memories.
Spent over 100,000 Cole at Pirka's shop.
Dealt over 99999 in damage with a single attack.
Made a promise with Plachta.
Defeated powerful enemies haunted by nightmares in all regions.
Unleashed all Dual Triggers.
Obtained all catalysts.
Beheld the withering of the Dream Tree.
Reached the maximum Adventurer Grade.
Reached the maximum Battle Level.
Raised the Adventurer Grade.
Helped Diebold reclaim his oath of knighthood.
Learned about Ramizel's newfound dream.
Received a priceless gift from Alette.
Assisted Kati in helping a child in Roytale.
Gave Pirka a pendant to stave off sleepiness.
Marveled at Gnome's artistic skill.
Learned about Olias's family.
Activated all Assist Skills at least once.
Defeated the Zmei.
Obtained all weather control tools.
Broke an aura 30 times.
Encountered a shadow from Diebold's past.
Played Major Gathering mini-games with all of the gathering tools.
Saw Plachta accept a position of authority.
Found Plachta's soul.
Agreed to help Elvira.
Defeated one giant enemy.
Achieved Super Success more than 10 times.
Learned a Bonus Skill for the first time.
Met Ramizel.
Changed the weather.
Synthesized an item with Plachta for the first time.
Played a Major Gathering mini-game using any of the gathering tools.
Devised a new recipe.
Synthesized an item with Sophie for the first time.
Arrived in Erde Wiege.