Released in 2009 on Xbox 360 and PC (Microsoft Windows), this is a downloadable content (DLC) campaign for the original *Left 4 Dead*. It serves as a narrative bridge between the "No Mercy" and "Death Toll" campaigns. Following the helicopter escape at the end of "No Mercy," the survivors' rescue is cut short when the pilot succumbs to the infection, resulting in a crash.

Setting and Story

This campaign plunges players into a condensed, two-chapter experience set in an industrial area outside Fairfield, Whitney County. The atmosphere is gritty and urgent, reflecting the immediate aftermath of the helicopter crash and the survivors' desperate search for escape. The environment emphasizes close-quarters combat and intense horde encounters.

Core Gameplay

The core gameplay remains consistent with *Left 4 Dead*, focusing on cooperative survival against waves of infected. Players must work together as a team to navigate the environment, manage resources, and fend off relentless attacks from common and special infected.

Distinctive Features

A key feature is its shorter length, designed to deliver a concentrated dose of *Left 4 Dead*'s signature gameplay. The finale centers around activating a generator to lower an armored truck, which triggers a sustained horde assault. A gameplay element requires players to restart the generator during the finale, adding a layer of risk and coordination to the encounter. The survivors ultimately escape using the armored truck.

What is the gameplay like?

Players navigate through two chapters, fighting off waves of infected while managing resources and coordinating with teammates. The goal is to reach the armored truck and escape, but not before triggering and surviving a final, intense horde attack.