Info from the Video! The rooftop Battle is after the Hospital Fight (The clip which was showed) and is about ten minutes long! Predalien and drones fighting with Wolf. Humans try to escape. Also they said, that they wanted the Predalien to be smth. new. Chet is bigger then Wolf (9 feet), and moves / behave different ... not like simple drones etc. 1/3 (the last part) is completely in dark and rain ... power is cut. greetz