Here is the full list of all 50 Atelier Lydie & Suelle: The Alchemists and the Mysterious Paintings DX achievements.
Unlocked All Achievements.
Begun the exploration of a Mysterious Painting.
Ascertained the bond between the twins.
Reached S Rank.
Reached Normal Ending.
Reached Good Ending.
Reached Shop Ending.
Reached Mysterious Painter Ending.
Reached True Ending.
Failed in synthesis at the atelier.
Got help from a special person who had certainly grown up.
Had the reunion you have dreamt about.
Enjoyed a vacation.
Tricked Lucia.
Attended a coronation ceremony.
Saw a very happy Firis.
Was treated to a wonderful potato stew.
Gave Plachta a massage.
Saw a surprising scene between Hagel and Pamela.
Corneria has grown.
Spied heavy drinkers.
Spied weak drinkers.
Saw to a reconciliation of old friends.
Saw a marvelous puppet show.
Performed a Character Change for the first time.
Inspected great many barrels.
Customized a weapon for the first time.
Created all weapons and armors.
Spent a lot of money in Corneria's shop.
Collected all insect materials.
Collected all fish materials.
Used Battle Mix for the first time.
Used all patterns of the Battle Mix.
A mysterious happening occurred during a battle in a painting world.
Repainted surroundings during a battle.
Saw all the Combination Arts.
Created an unbelievable item using the Extra Mix.
Finished many Quests.
Fulfilled all Ambitions.
Discovered all recipes.
Synthesized all items.
Reached max battle level.
Reached max alchemist level.
Played with a fire dragon.
Defeated an ancient God of Thunder.
Defeated the guileless Licensed Alchemist.
Defeated the core of Remplir.
Defeated the Creator deity.
Defeated the girl who lives in the dark red world.
Defeated the two goddesses who unleashed their full strength.