After activating the armory it is most advantageous to seek high ground within the walls of the Fortress. The incoming hordes are composed of all manner of zombies, especially Infested Marines. The initial waves contain Civilians attempted to flee the outbreak; they are cut down and dispatched along with the rest of the infected. Gargoyles will also attack later to harass players and more importantly give sight for the infested marines. Towards the end, the horde will consist almost entirely of Infested Marines and Immortals. The preferred weapons for this battle are the M5 Pulse Rifle and MP9A2 Sub-Machine Gun, but the UA GPR-12 will work fine too. When the dust has cleared, the real threat will present itself.