I have to agree. You definitely used too much noise!
The textures don`t look final so I think it`s okay that the street looks too clean at the moment.
Most parts doesn`t even look textured (like the street).
Other than that it`s a good start.
I have to confess that don`t like the setting of the game (sounds a little bit too violent like postal) but I think this is a matter of taste.

~Gurke