I just found an exploit while doing the quest 2 of the Caudecus manor. Just take the quest 2 and then come back to the spawn point, go to north until entering in a house, go upstair, go on the wall (by the window) and go to the closed-door (the one we normaly need to destroy with explosives) and go behind the door. You will just need to destroy 3 canons, 5 "silvers" guards, then u got a chest, kill the boss, and get the 15 token