Here is the full list of all 12 Ether One achievements.
Rang the bell in the Institute upon your return.
Swapped the fuse in Restoration Chamber 3.
Taken every Core Memory photograph.
Listened to all the Voicemail messages.
Restored all of the plaques.
Heard the complete tale of The Knocker.
Fill the shelves in The Case.
Restored 20 Projectors.
Collected all the Memory Fragments.
Restored 15 Projectors.
Restored 10 Projectors.
Restored 5 Projectors.