Survival mode takes all of the areas, 15 in all, from the original Left 4 Dead maps where you call the horde, like at the elevator in No Mercy and at the crane in Dead Air. There’s also the brand new lighthouse themed, “The Last Stand” with the apt tagline “it doesn’t end well”, because, despite being the level loaded with pills, explosives, ammo and health…well, good luck lasting long enough to use any of them. There’s no rescue in sight for Survival mode, just a never-ending flow of zombies and the crushing feeling of impending doom (or a tank beating you into the pavement). Apparently, the team at Valve hasn’t surpassed the 10 minute mark, and our fairly skilled crew topped out at a little over four minutes in Death Toll’s drains, earning a bronze and falling nearly three minutes short of a silver ranking. For comparison, my first lighthouse run relying solely on AI lasted a whopping two minutes and forty-one seconds. That’s longer than some of my attempts with human players, but don’t expect to set any records with the AI in tow.