IGN’s Guide to sneaking your way through Dishonored: Death of the Outsider non lethally in Low Chaos. In Mission 2, Billie heads to the Upper Cyria District to look for clues for the whereabouts of a weapon that can kill the Outsider.
For more guide help, check out the Dishonored 2 Wiki at http://www.ign.com/wikis/dishonored-death-of-the-outsider