How to Play the "No Mercy: The Sewer" level in Left 4 Dead

Learn the ins and outs of the popular Xbox 360 video game Left 4 Dead. This first-person shooter video game is also available on Windows computers, but nothing compares to the horror it invites on the Xbox 360.

This video tutorial gives you a walkthrough of "No Mercy: The Sewer" in Left 4 Dead. From this two-part video, you'll see exactly how to go about getting through the level "The Sewer" in the "No Mercy" chapter of the survivalist apocalyptic video game on Xbox 360.