Keep doing this until the end of the round ( leave 1 slow zombie so you don't start the next round) once you have just the 1 zombie left you can go to the ranbom box and get sum weapons you want. Go bak to the same corner ( you should be far enough ahead of them to be able to turn around and shoot the big group (this is also a way go get alot of points really quick)). Stand there until you are about to be over run, then run a lap around the big screens in the middle of the stage ( make sure the zombies are following you). Step 4: Go to the bak corner infront of the next door. If you havn't found the random box yet buy the M16 ( you will need a machine gun). Step 3: Go to the stage, turn on the power, link the portals, go bak to the stage. Stay there til you have a few thusand points.
Step 2: Open the upstairs door then run all the way through to the room with the stakeout. Step 1: Stay in the first room until round 3 or 4 (DO NOT buy any weapons off the wall).
