Great test, You do plan to make more right?
Though the frames were a bit choppy, it was over all a really great test. Somethings to improve on:
1. Framerate, like I said, the choppyness makes the whole flashes' overall quality go down quite a bit, fix this, and you'll be looking closer to pro.
2. Speed, when the assassin threw his knife, it looked like it was in slow motion, I'm not sure if you intended it this way, but it looked like everything was moving much slower than it should.
3. Filesize, for such a short flash, the size shouldn't be 6.7 megabytes. You might want to start compressing your audio some more.