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