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