This is a co-op strategy, best with only two players and also you will need to be able to communicate.

First you want to get as many points as you can before the dogs. Then you want to buy the upstairs door and make your way to the stake-out. Now one of you buy the MP-40 and one buy the STAKE-OUT.

Get through the dogs round then make your way to the stage and then turn on the power on. If you have found the box on the way to the stage then use it twice each.

Now leave a crawler at the end of the round, rebuild all the barriers and link the teleporter. Now both of you get into the teleporter and kill the crawler. Now camp in the teleporter until you start to get over run, when that happens teleport.

Now attack the zombies from the pack a punch room, pack a punch a weapon if you need to. Now you have teleported back, aim at the center of the stairs, the zombies will pile in. When you get over run go up the stairs and go through to the second room and turn on the trap.

One of you fire at the zombies coming into the trap and the other guarding the window and the door. When the trap runs out go to the trap that leads to the stage and again have one person guarding the windows and one at the trap. Leave a crawler to rebuild the barriers and to get new guns and also to link the teleporter. Do that over and over again.

Tips: the first perk you want to get is jugger-nog, then you want to get speed cola then you want to pack a punch your weapons. When you have some spare points buy quick revive then double tap. The guns that you are aiming for is for one player to have a ray gun and FN FAL and the other to have a thunder gun and a machine gun. However if anyone gets a ray gun or if you both get a ray gun take it!

Never split up!