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