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