Here is the full list of all 19 >observer_ achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Find and listen to all patient interview recordings.
Find all nanophage patient cards in a single playthrough.
Complete all With Fire And Sword: Spiders arcade games
Find all RC cars and recall a memory of Adam.
Embrace Adam.
Reject Adam.
Finish the game without dying.
Earn 3000 points during a single trapware run.
Survive Adam’s trapware.
Analyze 100 objects.
Find all roses and discover the final resting place.
Interrogate Amir’s clients.
Decide the fate of the organ farm.
Overdose on synchronization pills.
Find 10 nanophage patient cards.
Decide the fate of the merging minds.
Interrogate 20 tenants.
Decrypt Adam’s figurine.
Complete your first Dream Eater sequence.