The dark figure would notice that while the Major has agreed to send out some of his men to help guard the auction, there are still fair amounts of Teutonic-styled knights to deal with. He would notice that there is a guard standing by just about every row of windows and two guards standing in front of the entrances. He has the option of entering through the windows on the higher floors, but he may or may not notice shadows moving behind the glass.

The men are all quite well armed.