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