Full list of all 19 >observer_ achievements worth 1,000 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Xbox One.
Completed all With Fire and Sword: Spiders arcade games
Found all roses and discovered the final resting place.
Decided the fate of the organ farm.
Decrypted Adam's figurine.
Found all RC cars and recalled a memory of Adam.
Interrogated Amir's clients.
Attempted to interrogate 20 tenants.
Completed your first Dream Eater sequence.
Analyzed 100 objects.
Decided the fate of the merging minds.
Found 10 nanophage patient cards.
Overdosed on synchronization pills.
Earn 3000 points during a single trapware run.
Survive Adam’s trapware.
Reject Adam.
Find and listen to all patient interview recordings.
Find all nanophage patient cards in a single playthrough.
Finish the game without dying.
Embrace Adam.