Not bad, but technique needs some work.
I must say this isn't a bad Flash. Your animation is pretty fluid, everything looks like it should, et cetera; the main problem is the explosions and flames which look like you just gave up and drew shit. These are incredibly difficult things to draw, but they really add a lot to an action-oriented short like this. If you went back and redrew all these effects, it would take a heck of a lot of time but look zillions of times better. The silence doesn't really detract from the work, but does kind of hamper the experience.
I voted 2. Hope to see improvement next time!