Here is the full list of all 19 >observer_ achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Finish the game without dying.
Earn 3000 points during a single trapware run.
Embrace Adam.
Find all nanophage patient cards in a single playthrough.
Find and listen to all patient interview recordings.
Find all roses and discover the final resting place.
Reject Adam.
Survive Adam’s trapware.
Complete all With Fire And Sword: Spiders arcade games
Decide the fate of the organ farm.
Decrypt Adam’s figurine.
Analyze 100 objects.
Find all RC cars and recall a memory of Adam.
Interrogate 20 tenants.
Find 10 nanophage patient cards.
Decide the fate of the merging minds.
Interrogate Amir’s clients.
Complete your first Dream Eater sequence.
Overdose on synchronization pills.