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.
Finish the game without dying.
Find all nanophage patient cards in a single playthrough.
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.
Find and listen to all patient interview recordings.
Decide the fate of the organ farm.
Decrypt Adam’s figurine.
Decide the fate of the merging minds.
Earn 3000 points during a single trapware run.
Overdose on synchronization pills.
Embrace Adam.
Survive Adam’s trapware.
Analyze 100 objects.
Interrogate Amir’s clients.
Interrogate 20 tenants.
Find 10 nanophage patient cards.
Complete your first Dream Eater sequence.