Here is the full list of all 49 Atelier Ryza: Ever Darkness the Secret Hideout achievements.
Earned all trophies.
Obtained all recipes.
Became a Braver.
Activated everyone's Fatal Drive.
Defeated the Queen of Shadows.
Created an item with Item Level 99.
Created a bottle with Gathering Synthesizer Level 51.
Defeated all 5 Great Elements.
Got Ryza's alchemy level to 99.
Wrote a record of every exploration.
Defeated the Eternal Sculpture.
Saw everyone move on to chase their dreams.
Created the Crimson Stone and saved Kurken Island.
Got Ryza's battle level to 50.
Defeated the Queen of Darkness.
Obtained the Revelation Book.
Defeated the King of Storms.
Defeated the Savage Assassin.
Defeated the Noble Paladin.
Defeated the Mirage Master.
Completed requests to get Peter to interview you.
Entered the Kurken Bunker.
Found and installed all Power Reactors.
Found all treasure chests.
Visited the Holy Tower of Pynnor and learn the truth.
Created the Bomb Rod.
Saved the goat you met on your travels.
Installed the Multiplicauldron at the secret hideout.
Defeated the Shining Puni.
Helped Empel regain his former strength.
Spent the night camping in the Underworld.
Laid eyes on the Underworld.
Installed the Gathering Synthesizer at the secret hideout.
Learned about the history of Ryza and the others.
Helped create Rasen Pudding.
Installed a Power Reactor at the secret hideout.
Created the Bug Net.
Defeated the dragon at the old castle.
Created the Hammer.
Created the Fishing Rod.
Found one treasure chest.
Wrote a record of one exploration.
Built a secret hideout for everyone.
Witnessed the rise of a strange beast.
Attended a tea party with Ryza and Klaudia.
Created the Woodcutter's Axe.
Created the Reaper's Scythe.
Synthesized for the first time.
Visited the mainland for the first time.