For a car game it was pretty entertaining. If you added more things like car selection map selection and special effects like slippery surface or something like that its quality would be much better!
Guard: "Hmm... there's some footprints leading behind that wall... lets go check and make sure this wall is keeping anything from us." *Turns around walks away.* Assassin: :D
Believe it or not... the first weapon I found was the Chainsaw, so I was good on defense at that particular moment :D (doesn't work as effectively later on D;)