You hit the creature fairly well it seems. Its head jerks to the side and a small trickle of dark black blood runs down its scalp. Then to your horror it turns toward you and opens its mouth in a hiss and something hits the wall next to your head. Its some sort of needle and its glistening in what little light there is. Suddenly the other creature slams into the wall and lands in the dumpster drawing the attention of its mate from you. Its head swivles back toward the larger threat. Out of the corner of your eye you can see something large and meancing in the darkness. Whatever it is its fast.