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