A simple 4-way shooter

I just finished another tutorial from the "Foundation Game Design with Actionscript 3.0" book.
This game is based on the tutorial "monster mayhem" and I learned the basics of how to code a simple weapon and some simple enemy AI. This is also my first attempt at setting up my code so it works efficiently with multiple levels.

Shoot some Cloud Dudes!
Arrow keys to move
space bar to shoot ( in the direction that you are moving, its a bit confusing without a visual cue)