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