Crash Course

Crash Course is the first DLC campaign for Left 4 Dead. It is free on the PC, but normally costs 560 Microsoft Points for the Xbox 360. It was released on September 29th 2009. According to Valve it is meant to bridge the gap between No Mercy and Death Toll.

This campaign was released for Left 4 Dead 2 on November 4th, 2011 as part of the Cold Stream DLC, along with Death Toll, Dead Air and Blood Harvest. Compared to the other ported campaigns from Left 4 Dead into Left 4 Dead 2, Crash Course is the least modified campaign, retaining most of its original layout and features.

Crash Course begins shortly after the events of No Mercy. The helicopter pilot from the Rooftop Finale finally succumbed to the Infection and was killed by Zoey in mid-flight. The helicopter crashed just outside of the city of Fairfield in Whitney County which is where the campaign begins.

Starting from next to the helicopter crash site, the Survivors must traverse Fairfield's extensive industrial area to get to a truck depot where an armored truck mounted on an workshop hoist must be lowered and boarded to escape Fairfield and get to the town of Riverside where a military evacuation center is reported to be. (This plan foreshadows and contextualizes the Death Toll campaign).

Below is a complete list of video walkthroughs of the 2 levels:


 * 1) The Alleys
 * 2) The Truck Depot Finale

Note that the gameplay videos are on each campaign's info page not on each map page.

Left 4 Dead 2
With the Cold Stream DLC mentioned above, Crash Course was edited and ported over to Left 4 Dead 2. Thus it included all the new infected, items and weapons giving a whole new experience. Video walkthroughs made by youtuber Rusty Woud show off the Left 4 Dead 2 version of the campaign and all the changes:
 * 1) The Alleys
 * 2) The Truck Depot Finale

Released in Crash Course
(Note that of these features only apply to Crash Course)


 * Sometimes only one or two of the second tier weapons spawn at a spawn site.
 * Alarmed cars now spawn at different locations.
 * Sometimes rooms that may contain items are barricaded.
 * New dialogue for Zoey, Louis, and Francis.
 * 10 new Achievements.
 * 2 new Survival maps.

Achievements

 * See Main Article: Achievements