Video footage has surfaced from the showdownLAN of the upcoming PC and Xbox 360 zombie vs. human shooter, Left 4 Dead. Brought to us by Turtle Rock Studios and Valve, who made a little ditty called Counter-Strike. The video above shows four survivors fighting off a bunch of the Infected. Gameplay looks fast, furious, and bloody. Not shown in the video are the "Super Infected' which are more formidable than the fodder shown above. We'll be sure to keep a keen eye on this as more details emerge.