Instructions
Launch "Borderlands." Click "Single Player," and then click the name of your "Borderlands" character to load your saved game.
Turn around and move to the Fast Travel station. Press "E" to activate the station.
Click "Jakobs Cove" in the Locations list. Wait for "Borderlands" to load the Jakobs Cove map.
Walk across the wooden bridge, and then follow the string of lights running through the trees until you reach a tunnel. Walk through the tunnel; the first gang of zombies emerges from the pool of water at the end of the tunnel.