The Octarius campaign that began with Book 1: Rising Tide, continues with War Zone Octarius Book 2: Critical Mass. Along with the galaxy-shaking conclusion to this epic conflict, the book contains a codex supplement for the Blood Axes, updated Index rules for Rogue Trader crews, a Speed Freeks Army of Renown, and rules for embarking on an Octarius Sector Campaign with new Legendary missions, branching mission trees, and powerful Crusade relics up for grabs. On top of that, there are also rules for using looted vehicles in Ork Crusade armies – no Rhino will ever be safe again!