Scratch

1st map: the black lines at the bottom can be used for cover. throw a molovtov (Press M) at one side to keep the zombies from coming in to hurt you. stay at a corner so boomers wont hurt you when they explode. watch out for zombies spawning inside. (Their spawns are randomized so you dont know where their going to appear.)

2cd map: stay at your spawn and throw a gasoline tank in front of you. (Press K) kill any zombie that comes through or spawns inside. throw a molotov (Press M) infront of you to kill off any zombies that are coming and to reinforce the red fire.  (Note that fire can still hurt you) This is also a chaotic map that you would probaly not want to play.

3rd map (Helipad): When your spawned, the corner thats on fire infront of you go to there. walk around it so you wont get burned. then, throw a molovtov on 1 side and shoot all zombies that spawn inside or come near. Also, go back farther in the corner so you get hurt by boomers when they touch the fire, it also gives you more time to shoot the zombies that spawn inside.

4th map (paintball): their is no really tactics you can use but shoot any zombie that comes near or spawns inside the wall where you are.

HOPE YOU LIKE IT