IGN’s Guide to sneaking your way through Dishonored: Death of the Outsider non lethally in Low Chaos. In Mission 3, Billie heads back to the Upper Cyria District armed with new information – but revisits a few locations before finding a way into the bank.
For more guide help, check out the Dishonored 2 Wiki at http://www.ign.com/wikis/dishonored-death-of-the-outsider