The walls are breached. The Walkers are now inside. There is no victory here, only escape. While your team scrambles to prepare the extraction, someone must stay behind to lure the horde away. That someone is you. Arm yourself with whatever weapons and supplies remain. Every second you are alive gives your team a better chance to escape. The dead never stop coming. Survive until the extraction is ready. Fight! Because if the Walkers catch you, there won't be a second chance.