The Greenhouse

The Greenhouse is the first chapter of the third campaign, Dead Air.

The survivors start off in the back of a greenhouse, next to a table that has four first aid kits, four Molotovs, four pipe bombs, tier one weapons, and an ammo cache. Of all of the campaigns, this is the most unexplainable starting location. There appears to be only a single way into or out of the room, though Infected still plague the other side of it. How did the Survivors manage to end up here?

Overhead, a large military airplane will fly by, knocking one of the panels of the roof off. One of the survivors will remark that because there is an airplane still flying, the airport should still be working.

They must work their way across the rooftops, passing through several apartment complexes. Near the end, they will exit through a window, landing on top of a semi truck. Across the road that they emerge on, will be the Harbor View Hotel. Inside of this hotel will be the safe room.

Campaign
At the beginning, the AI Survivors will grab:
 * Bill will grab a submachine gun.
 * Francis will grab a submachine gun.
 * Louis will grab a submachine gun.
 * Zoey will grab a submachine gun.

While the AI prefers the submachine gun in this area, the shotgun is recommended here.

Make sure that everybody has grabbed a health pack, as they are necessary for survival. Also, be sure to grab either a pipe bomb or a Molotov before proceeding, as such items come in handy.

Before proceeding onwards, climb up the small hill onto the overlook. All of the Infected in the greenhouse are in sight here, and easily fall victim to pistol shots. Be sure to crouch to increase your accuracy! Alternatively, throw leftover grenades among the Infected to more quickly thin their numbers.

Note: Although it is possible to jump upon the beams which run across the greenhouse rafters, there is no way to reach the other side, giving this tactic limited potential.

Once you feel prepared, open the door and proceed through the greenhouse. Dart into the room at the far end, and carefully exit onto the rooftops. Be sure to watch your back as you do so. There should be a wooden plank (as unexplainable as the starting location) across from the door, leading to another rooftop. Be careful not to fall as you cross.

Once at the other side, turn left towards the building. Keep an eye out, as useful items occasionally appear along the roof edge. Enter through the right-hand window, shutting the bedroom door as you pass it on your way to the kitchen. Spend a little time looking around this room and the living room, since pills, grenades, and even a second pistol are likely to spawn here.

Exit through one of the windows in the living room, and climb up the ladder to your right. This is a common spot for a horde to appear, as well as a favorable ambush place for the Special Infected, so move quickly across, and drop down onto the other side. Enter the Holly Street Apartments through a broken hole in the wall. If you have not encountered a second pistol yet, check the bedroom to the left. Otherwise, head down the stairs, and turn right into the kitchen where yet another opportunity for a pistol appears.

Approach the right-most of the rather large windows in the kitchen, and jump down onto the truck beneath it. Don't bother shooting all of the Infected like at the beginning; it's not worth it. The Harbor View Hotel is straight across the street. Quickly run inside, checking the counter for pills as you do, and enter the safe room. Shut the door on any pursuing Infected, and take a quick breather. Don't wait too long, though! We have a plane to catch!

'' Warning! There is a car just in front of the hotel with flashing lights. If you shoot, hit, or touch this car, its alarm will go off, summoning a horde to your position. If you accidentally set it off, make a break for the safe room. ''

Trivia

 * There is no apparent explanation for the Survivors being in the greenhouse, as the only way to enter is how they leave.
 * On the roof after the first apartment, some graffiti says "God is dead". Occasionally, Zoey will comment by saying, "Oh no! The zombies killed God!", and Francis will come back with "God is dead huh? Tell him to join the club."
 * The lights in the safe room are very bright at the end of this level, but are out at the beginning of the next one.
 * The later half of this level takes place off Holly Street. There is a sign for the Holly Street Station on the Subway level of No Mercy, implying that both take place in the same city, and possibly close to one another.However,This is likely untrue,as the official site even says that Dead Air takes place in Newburg.
 * You can see a large body of water in this level, and a boat. This implies that the fishing vessel who rescued the survivors at the end of Death Toll dropped them off in Newburg. Turning on noclip and examining the only visible craft in the water reveals it's a different boat, however, implying that the owners of the fishing vessel left or the survivors escaped from a sea adventure (Another reason for this could be that a different boat was used back in the time when the game had a storyline, and as the storyline was dropped developers decided to leave the boat there as an easter egg).