Dead Fortress - Part 1/2 [SFM]

Something odd is happening in Pipeline. People thought to be long dead have been showing up everywhere, and they seem to have only one thing on their minds - a craving for the flesh of the living. Those that have been bitten by the walking dead have soon turned into monsters themselves, mercilessly attacking their former friends and foes alike. Every minute, more and more people are eaten alive. And worst of all; they can only be killed by destroying their brain. But are they really unstoppa