Great
A well-done zombie game.
I like how instead of cash, you have to manage your time (but when do you sleep? :P )
The graphics were interesting. So were the weapons... except for a few things.
This may just be me, but it seemed to me like some weapons were just plain better than even those who came after. The first submachine gun we get fires fast and with good aim, and doesn't take that long to reload, whilst the shotguns and chainsaw seemed to do very little damage, even at point blank range.
Then later on the hunter rifle seems a bit overpowered. It reloads fast enough, and does enough damage that I found it definetly worth using compared to all but the sniper rifle you get later on (with which most zombies died on the left side of the screen). Of course, most games don't have balanced weapons, either.
Using the right weapons, the game was a bit on the easy side.