Awsome dude!
This is a fantastic game and all, but the only problem I found with it, is that the timing of the zombies are quite poor in the songs. Well, the odd zombies will come on time, but the rest don't. That's why I screw up bad on hard parts. I play this on LOW quality, so I don't think it's lag..
.. but anyway, this is an awsome game. Everything else is fine the way it is, but just the timing will need some work. So, I'll give it a 9.5/10. :D