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