Dead on Arrival is a survival map which takes place in a Mercy hospital themed environment. The survivors are trapped on one of the floors. The only escape is the elevator which breaks down, Leaving them to fight the horde.
Starting from a cell in jail, jumping into dark sewers and running across a deep forst to reach an industrial site, here is the last big update on Carnage campaign for L4D
An entire city overrun with infected. The survivors stumble apon an abandoned millitary blockade. Hold the blockade against the infected horde, if your going to die, take some of those bastards with you!