"Incapacitate all Guardians while unarmed" is an optional mission objective in Sequence 10 / Memory 03: The Observatory
Walkthrough[edit]
You are effectively limited to unarmed takedowns and usage of the Dart Gun with the Sleeping Darts. Careful use of both these tools will see you through the encounter. Move in carefully in all cases, sweep the area with Eagle Vision to find the Guardians. This will help you ensure that you get them all with minimal chances of them ambushing you. Remember to avoid getting spotted. The darts they use inflict massive damage! Apply this to the guide through the Jungles and the Cave and you will have little trouble getting through without killing any of the Guardians.
