The Train Station

The Train Station is the fourth chapter of the campaign, Blood Harvest.

The Survivors pass through some woods and find a barn where they can find Molotovs, Pipe Bombs, or ammo. Later they find a train station where on occasion you can find more supplies. A large amount of the Infected can normally be found in the area. Out the back in the parking lot there is an abandoned car with an active alarm - this specific panic event seems to cause a lot of problems for players due to a number of reasons, including that it's normally in this area that a Tank or a Witch spawns.

Following the train tracks the survivors find another train station. Here they will find ammo and a Rescue Closets. They then carry on following the train tracks again and find that the way is blocked. They must pass through a house-type train station starting on the basement to the last floor where they need to jump out a window and follow a large bridge. At the end of the bridge there is a train carriage that has been converted into a safe room.

Tips

 * Sometimes when you're at the last house/station you find a witch at the bottom or on the stairs, if that's the case then you can bypass her completely by jumping from the hill into the window but if you don't have enough health you wont run fast enough to do it.
 * For some reason or other, despite this being a train station, all the player sees of trains are freight locomotives and boxcars.

Trivia
In one of the houses you will find a lawnmower with allot of zombie chunks. This is a reference to the movie 'Brain Dead'. Nice one Valve.