on zombie verruckt. i think its called. do not buy any guns. use pistol and ur knife. wait till u get 3450 points. (somewhere in round 3) run and buy the upstairs then the second door and finally the door into the electric room. If u can get the plasma gun, save it to about round 10. once u get to about round 7-8 go down those stairways in the elctric room and stay there. get the plasma gun or and just shoot the zombies when they come down the stairs, while also repairing the barrier next to you. u should easily get to round 17. also if u get about 4000 points, go get the speed cola. hopefully u can get some max ammos.