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|Tagline||"Their flight just got delayed. Permanently."|
"Get to the runway of Metro Airport for an airlift rescue."
Dead Air is the fourth campaign in Left 4 Dead.
Dead Air ported to Left 4 Dead 2 after 20,000 Left 4 Dead 2 players earned the achievement STREAM CROSSER by completing the campaign Cold Stream. In common with parallel L4D remakes, the L4D2 version features additional weapons, items and Infected, and various changes to the campaign's gameplay; most notably introducing a one-way drop in The Construction Site and a gauntlet crescendo in The Terminal.
The campaign opens with the Survivors hiding in a rooftop greenhouse when a low-flying C-130 sparks agreement that the local airport may still be operating evacuation flights. Thereafter the campaign has The Survivors make their way through Newburg to Metro International Airport where they must refuel their escape aircraft.
To get to the airport they must traverse rooftops, apartment buildings, and office cubicles; they defy health and safety regulations by lowering a dumpster using a crane, shoot their way through a de-constructed construction site, surmount the manifold dangers posed by an electrical substation, find somewhere safe in short-term airport parking, deliver various keynote addresses at the airport's conference center, attempt to check in, discover what really happens to lost airline luggage, battle crowds in the departure lounge, check their economy boarding passes before proceeding to the departure gate, and (in true budget airline tradition) ensure the airplane is prepped to fly before finally boarding their flight through the rear exit.
Below is a complete list of video walkthroughs of the 5 levels:
Please note that the gameplay videos are on each campaign's info page, not on each map page.
Left 4 Dead 2Edit
With the Cold Stream DLC mentioned above, Dead Air was edited and ported 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 changes from the original version:
Guide your team of Survivors out of the downtown core of Newburg's business district, through derelict office floors and still-inhabited cubicles, and out onto the runway of Metro International Airport, where the only thing standing between you and the last plane out of the city is a murderous army of the undead.
- There are several instances on the rooftops where one may find writing, such as "Help! Need food," or "S.O.S." There are also numerous writings about how a bomb will be dropped on the airport.
- The Terminal's starting safe room contains some of the game's most memorable graffiti including: "WE ARE THE REAL MONSTERS" and "I miss the internet".
- Other notable inscriptions include claims that the Infected were created by the military, the government is giving a cure to the rich and that the virus was made by aliens. Subsequent refugees have added their own disparaging addenda to these assertions.
- The phrase "God is dead" can be seen at various places in the campaign. Zoey will occasionally make an acerbic comment about it when she reads the one that appears on a wall at the airport conference center. This statement was coined by the German philosopher Friedrich Nietzsche and has since become embedded in popular culture as a way of rationalizing events of mass horror and disaster. The phrase also appears as a line in the final act of The Crucible.
- In the safe room of The Crane, there is some graffiti on the wall that states "This is our punishment." Right under this is the sentence "It's just Dead Air"―a reference to the title of the campaign.
|Survive the Dead Air campaign.|
|Survive any campaign on Expert.|
|WHAT ARE YOU TRYING TO PROVE?||(35G)|
|Survive all campaigns on Expert.|
|Play an entire game of Versus on Dead Air in Left 4 Dead 2.|
Behind the ScenesEdit
Only one screenshot of Dead Air was shown before the game was released. This, together with an early Runway image in the game's files suggests that Dead Air was originally intended to have a light blue "moonlight" visual tint applied to it.
An unreleased map called "Tutorial Standards" also exists in the both Left 4 Dead games' files which was originally intended to be part of the third chapter of this campaign with the title "The Garage".
- The desperation of the situation The Survivors find themselves in is underscored by strong evidence that the airport is out of service through aerial bombing. Not only does graffiti throughout the campaign make this claim, but it is also reinforced by random Survivor dialogue. For example near the end of Runway Finale the Survivors may state the airport was bombed to prevent the Infection from spreading, and Francis may say, "What idiot bombed the airport?".
- "Bombing the airport" can be said to foreshadow a central theme in Left 4 Dead 2's The Parish campaign wherein military jet aircraft bomb Infected-overrun New Orleans.
- "Dead Air" is a broadcasting term referring to a mistake made by a radio station announcer or DJ when the microphone is switched off so the only thing heard on the radio is either static or, more commonly, nothing at all.
- The term "Dead Air" is also used to describe air that is taken into the lungs but not absorbed into the blood stream.
- Dead Air has the largest number of unused character lines. Bill, for instance, has active lines only for The Terminal chapter.
- There are five real-life Newburg boroughs in Pennsylvania, but the largest one, in Cumberland County, has a population of 388 (as of 2009), which is nowhere near as it appears in Left 4 Dead. However, it is located close to the Allegheny National Forest, and appears to be based on Pittsburgh in its size, geography, and landmarks such as the international airport.
- Metro International Airport has many architectural similarities to the airport at Harrisburg, Pennsylvania.
- Francis' pose on the campaign poster is the same as that for Death Toll, only it is lighted differently.
- The flash on Bill's beret is the blue U.S. Army flash in this poster. On all other posters (as well as in-game), it is the yellow flash of the U.S. 1st Special Forces Group. It is also one of two posters in which he is missing his trademark cigarette. The other one is the poster of The Sacrifice.
- There is a port of this campaign created as a custom campaign for Left 4 Dead 2 which features a Scavenge finale instead.
- The C-130 used in this campaign is a Republic Of Korea Air Force C-130 as there is a ROKAF inscription on the tail-fin. However its pilot may not be Korean since he speaks with a strong Midwestern American accent.
- The Sacrifice comic (released September 2010) has Francis stating that the rescue plane crashes. This event can be interpreted as denoting the point at which the Blood Harvest begins.
- The background lighting in this campaign can be interpreted as being the result of the sunrise or sunset combined with a pall of smoke hanging over Newburg.
- At the start of The Greenhouse, Zoey says "We can't stay up here forever" which suggests the Survivors had been in hiding and supplies are running out. In the opening scene, the C-130 is shown with its undercarriage lowered. This fact, together with its sudden, low level appearance and the Survivor's reactions (cf. Zoey's statement above) all imply that Metro International Airport has been out of service for the entire time they have been holed up in The Greenhouse.
- This campaign was to be released for Left 4 Dead 2 early if 20,000 Left 4 Dead 2 players earned the achievement STREAM CROSSER by completing the Cold Stream campaign. The goal was reached within four hours, and Valve released a beta of Dead Air for Left 4 Dead 2 on July 22nd 2011.
- Unused lines of dialog include various insults which suggests that the airplane pilot and the Survivors got into an argument. Some of the Survivors' lines were transferred to confront the Church Guy.