In Curtains Down, there is a room in the basement on the west side where there are three rats. Occasionaly, a worker will come in and try to kill them with a nailgun. If you kill all three rats, a ket card entitled RATCLUB KEYCARD will appear on one of the tables on the west side of the room. If you take stairs near the target's dressing room to the second floor, and use it on the door on first door to the left, it will open a storage room with what appears to be a cel, and on the other side there are a bunch of rats havinga party and doing things like boxing, and playing cards.