The style slots are such a cute addition - I couldn't help but use at least one for style each time. The particle/sound effects for defeating enemies and beating the level were really great. I have to agree that roll and then assign would probably make for more exciting decisions. It was interesting that the lower-value gun was actually sometimes easier to use than the stronger gun since you could hold down the mouse to rapid fire - an interesting trade off!
Good job on the music too.