In this 96-page hardback book, you'll find: The ongoing narrative of Warhammer 40,000, focusing on the ambitions of a new and powerful Chaos Daemon Stunning photography of individual models and stirring scenes of battle, illustrating the forces fighting over the Rock Additional rules for using six factions in Boarding Actions Adeptus Mechanicus, Death Guard, Chaos Daemons, Genestealer Cults, Tyranids, and Necrons Terrain component rules for Boarding Actions, detailing the effects of searchlights and camera networks, sentry turrets, and breaching robots Eight new Boarding Actions missions, plus a system for linking your games together into a Rock Besieged campaign Datasheets for Vashtorr the Arkifane, master of the Soul Forges, and Grand Master Azrael, reborn leader of the Dark Angels You will need a copy of the Warhammer 40,000 Core Rules and Arks of Omen: Abaddon to use the contents of this book.