Fortunately, since he'd sabotaged them, earlier, when they went to use the ballistae, they'd backfire. As he makes his way into the main hall of the dwarven fortress, the bandits are moving rapidly, but seem to be rather disorganized; a fair number look to be hung over, and if there's any leadership, it's not immediately apparent. The fortress is also a fair bit larger than he might have expected, and there seem to be more people here than he first thought.