Here is the full list of all 49 Atelier Ryza 2: Lost Legends & the Secret Fairy achievements.
Unlocked All Achievements.
Defeated the Last Sentinel.
Unlocked a Core Element.
Obtained all decoration accessories.
Obtained all gathering and adventure tools.
Activated all Core Drives.
Used all essences.
Maximized the Development Level of any category.
Completed all of Romy's character events.
Created a level 99 item.
Created an item with 999 quality.
Unlocked all alchemy skills in the Skill Tree.
Raised a rare Puni.
Completed all ruins in the Exploration Diary.
Collected all Ruin Fragments and Memory Vestiges.
Completed everything on the research list.
Obtained an everlasting treasure on a grand adventure.
Defeated the Legendary Monarch.
Completed all of Dennis's character events.
Earned max reputation with all groups.
Completed all of Serri's character events.
Completed all of Clifford's character events.
Obtained all decoration items.
Discovered the Mirage Land crystal.
Completed all of Tao's character events.
Discovered the Dragonbone Valley crystal.
Used an essence during synthesis.
Completed all of Lent's character events.
Created an Evolved Item.
Completed all of Patricia's character events.
Unleashed all Fatal Drives.
Completed all of Bos's character events.
Completed all of Zephine's character events.
Discovered the Ancient Mana Workshop crystal.
Completed all of Cassandra's character events.
Obtained the Mana Lantern.
Completed all of Klaudia's character events.
Discovered the Sunken City of Stars crystal.
Earned max reputation with any one group.
Created an Air Drop.
Completed first ruin in the Exploration Diary.
Discovered the Maiden's Catacombs crystal.
Found the Spirit Beast Whistle.
Defeated an enemy shrouded in darkness.
Found the Emerald Band.
Defeated a giant enemy.
Met Fi.
Synthesized an item for the first time.
Crossed the ocean and reached the continent.