While the girls were busy "asking" the demons for the whereabouts of the real people they had copied their faces on, I went around the camp, checking the defenses of the camp. Although they only use wood as their main defensive walls, they are made from tough wood, and knocking on them allowed me to see their durability speaking for itself. I am pretty sure it won't be knocked down so easily.
But even with the toughest defenses, there are bound to be some mishaps, especially since the demons who disguised as villagers might have already tampered with a few defenses in the camp.