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.
Reject Adam.
Finish the game without dying.
Find all nanophage patient cards in a single playthrough.
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.
Decide the fate of the organ farm.
Complete all With Fire And Sword: Spiders arcade games
Decrypt Adam’s figurine.
Find all RC cars and recall a memory of Adam.
Interrogate Amir’s clients.
Decide the fate of the merging minds.
Interrogate 20 tenants.
Complete your first Dream Eater sequence.
Find 10 nanophage patient cards.
Overdose on synchronization pills.
Analyze 100 objects.