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