Precursors have built star roads. Huge battle stations designed to protect star systems and star clusters. Thes battle staions are im pervious to all kinds of damage. The halo rings designed to kill everyone in the galaxy all 12 a huge precursor forerunner ancient human and flood fleet consisting of billions of ships. Nova bombs galore. Checkmate. Also the death troopers onbthat ship just blow up the ship. And the flood imagine flood controlled death troopers. I think now you get it.