balcony t/p to mainframe, wen have teleported stand the oppsite side to were you goin to run immediatly, so as soon as ive teleported i stand a fraction to the right, then you will see the zombies go to the right , then i do one to the left, through corridor, up the stairs then waite to drop down then gate on. Im running from 33, cos u will just wind ur points down.
Waffler wastes ur points, with the waffler i can get to 35 on the balcony, but one lucky hit, and ur down. so not worth the risk.

Example ppsh = 1 zombie 200 points.
Waffler = 1 zombie 60 points.
ppsh = 40 zombies 8000 points
waffler = 40 zombies 2400 points. Per round average.

I think Round 45 is in reach just! Then depends on wat box wants to do also, usually evens it way out at some course of the game.