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. This is the only campaign that supplies the survivors with both pipe bombs and molotovs at the very start. This campagin also has 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 can easily be dealt with. Alternatively, if there is a AI in the team, they will not pick up either of the grenades. Use this to your advantage and throw the extra grenades down into the groups of Infected to remove them rapidly.

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 cautious upon arriving on the rooftops as the infected have many positions here that can cause grief for the survivors. This applies especially in Versus. Be wary when crossing the wooden planks over to the other rooftop as Smokers have a nasty tendency to drag you over the edge forcing another survivor to help you up before you can continue.

Once you've reached the other side, turn left and head towards the building. Enter through the one of the three windows on the right-hand side of the building. Don't forget to search the rooms for useful items. Pipe bombs or molotovs can appear on the kitchen table. Pills and sometimes a second pistol can spawn on the living room table or in the kitchen.

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 favourable ambush place for the Special Infected, so ascend that ladder quickly and avoid loitering on the roof you just climbed on to. It is an excellent place for smokers. Drop down onto the other side, making sure that your entire team drops down and the last one doesn't get snared by a smoker or pounced by a hunter. If this occurs you may not be able to save them.

Enter the Holly Street Apartments through a broken hole in the wall. If you have not encountered a second pistol yet, there is a corpse beside the window that may have one lying beside it. If there is not one there, check the bedroom to the left. Otherwise, head down the stairs and turn right. However, be careful as Boomers enjoy lurking either around the corner to the right, down the hall and around the left corner or in the room to the left. The kitchen is yet another opportunity for a pistol to appear.

Approach the rather large windows on the other end of the kitchen. If you did not encounter a Boomer at the staircase or fairly recently, it is not uncommon for a boomer to be waiting for you beside the truck below. Short of a well aimed molotov it is often impossible to kill the boomer from the window. Drop down from the window and on top of the truck. Keep in mind that if you miss the truck it will damage you. The Harbor View Hotel is straight across the street. Deal with the possible boomer and head for the hotel. Be careful as the car in front of the hotel has an alarm. If the car alarm is activated, toss a pipe bomb and head for the safe-room. Lacking a pipe bomb, either make a dash for the safe-room or hold out with your team in a defensive position until things calm down. Note that the entrance to the hotel is a possible spawn point for a Witch so listen out for her loud cries. Witch or no, proceed into the hotel. If you can spare a few seconds, check the counter for pills before you 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 to be 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).