Zombie 101

You may not sweat under heavy fire, but a lot of recruits have been freezing up under the gaze of the undead. It's time we shake the panic from your head with some valuable advice every soldier should know before encountering the waves of brain-eating zombies.
First off, the point of Zombies is to stay alive as long as possible. You're not getting out alive, so the goal's to go down fighting, and fighting hard. In order to do that, you need better weapons. Weapons cost points, and you accumulate points by killing zombies and fixing barriers. Not too difficult, right?

The zombies come in waves, with a short breather between rounds. There are four possible zombie entrances in the first area of both Kino der Toten and “Five”, as well as two possible weapon pickups - a single shot rifle or double-barreled shotgun. To purchase one, approach the weapon's wall mural and pay up 500 points.
In a co-op game, each person should cover an entryway, and communicate at all times! Let your teammates know if you start getting overwhelmed. You never know which way they'll come from, so one person might get swarmed while the others are just waiting around. Once the zombies are clear, go up to the barrier and repair. This earns you points and holds back the next set of approaching zombies, in turn giving you more time to shoot and stab.