Awesomeeee lololol
I'm giving this a 9 star for various reasons.
Graphics: wonderful! And this was your first game so i'm really impressed.
Sound: Sounds.. were awesome too lololol. I love the sound of the ump and chainsaw. However sometimes the sounds would overlap. Such as you were using a chainsaw and then switched to a gun(My knowledge on firearms isn't very wide) the chainsaw sound would still be there, and then if you changed back you'd hear the chainsaw sound be "doubled".
Violence: Best of all. Lots of gore (especially when the main character was killed hehehe) Nothing to add on this really.
Interactivity: Its a game. And this game had lots of it. 'Nuff said.
Glitches: Omg. I had to deal with glitches so much. When you die you would all of the sudden not be able to shoot when you play replay or you would be lying down with blood and stuff as if you were dead and not be able to shoot. At one point in the game I got day 13, which is pretty far (or at least for me, i kept dying and suffering from the glitches), i would kill all the zombies... But then all of the sudden the nothing would happen. The sun would be up, I would have my gun at hand, but no zombies came. I would just sit and wait. For the todo list paper to come up but it wouldn't come up either.
Overall: This was a great game, and the glitches were the only thing that turned me off from giving you a 10. However, I've had to restart the game about 10 times, and yet i kept playing (untill the sun came up and then nothing happened lol) Hehe. This game kept me amused (and like, 4 other of my friends who were playing with me at the same time) and laughing for about a good 2 hours, and it still is good :]