Is this a known exploit? You can get 11/9 bonecharms in mission 5 of D2 : r/ dishonored
Dishonored 2: bonecharm, rune and Outsider shrine locations | VG247
Dishonored 2 – Bonecharms LocationsGame playing info
Dishonored: The Brigmore Witches - Adventure Walkthroughs
The perfect bone charm : r/dishonored
Bonecharm Locations - Dishonored 2 Wiki Guide - IGN
Bone Charms - locations | Collectibles - Dishonored Game Guide | gamepressure.com
Dishonored Guide: The Empress' Secret Room in Dunwall Tower (Finding the Bone Charm inside the Dunwall Tower) | auluftwaffles.com, short video game guides
What this corrupted bone charm can do actually sounds promising : r/ dishonored
Collectibles: Mission 3 - The Bank Job - Dishonored: Death of the Outsider Walkthrough - Neoseeker
Bonecharm Locations - Dishonored: Death of the Outsider Wiki Guide - IGN