Stack them bodies up!
Pretty fun game, though making your hammer and psychic attack the same button makes strategy difficult, because while I'm swinging at one dude, I end up using my psy powers to kill another one accidently.
The most annoying thing is that I can't duck, which would make it easier to get at the guys climbing up to get me, and I can't attack mid jump while they chew at my ankles.
Also, the Ad on the bottom pisses me off because I"m winning, and I"m taking pot shots at the guys climbing up, who happen to also be near your ad, and clicking on it takes me to an entirely new window and locks me out of the old one for a bit as the new one loads your site, and the zombies kill me. This makes me hate your site. Alot.
Probably should put it at the top of the screen, where there will be no errant clicks, methinks.