For creativity, out of five, I give you a four. A four is given because, of course there weren't too many twists once the first chapter was over with. (Congratulations to the person who managed to come up with the spork inflicted leg wound!! I really loved that!!)
The grammar was good, so a 5 out of 5 for that.
The organisation was good, all up to the last chapter. The last chapter I found confusing and a little over the place. I have to mark you down for that, so a 3 out of 5.