Nightmare feels her destabilize the building, but his spike doesn't continue in a straight line. It suddenly changes direction, slamming into another building and pulling him across to land on that one with a crunch. He spins, firing the spike again, this time aiming for the opening when she either blocked or dodged the part of the building that was being thrown at her. He didn't know who the demonic fellow was, but he intended to take advantage of any opportunity he was given.