Here is the full list of all 49 Atelier Ryza: Ever Darkness the Secret Hideout achievements.
Earned all trophies.
Became a Braver.
Obtained all recipes.
Activated everyone's Fatal Drive.
Created a bottle with Gathering Synthesizer Level 51.
Created an item with Item Level 99.
Defeated the Queen of Shadows.
Got Ryza's alchemy level to 99.
Wrote a record of every exploration.
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.
Obtained the Revelation Book.
Defeated the Mirage Master.
Completed requests to get Peter to interview you.
Found all treasure chests.
Defeated the King of Storms.
Entered the Kurken Bunker.
Found and installed all Power Reactors.
Created the Bomb Rod.
Visited the Holy Tower of Pynnor and learn the truth.
Defeated the Noble Paladin.
Defeated the Eternal Sculpture.
Saved the goat you met on your travels.
Installed the Multiplicauldron at the secret hideout.
Defeated the Savage Assassin.
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.
Created the Bug Net.
Installed a Power Reactor at the secret hideout.
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.
Attended a tea party with Ryza and Klaudia.
Witnessed the rise of a strange beast.
Created the Woodcutter's Axe.
Created the Reaper's Scythe.
Synthesized for the first time.
Visited the mainland for the first time.