For an Alpha, quite good.
I don't know why, but this felt like something straight out of a slick comic book, what with the flash of light and violence.
Short and sweet, which is enough to captivate a majority of the Newgrounds audience. However, you should have just kept this until you had something complete to release because tests aren't often appreciated at all.
One thing: the whole hand raising bit was slow and sloppy, whilst the rest was a bit smoother/quicker.
A fine test, but a full length feature would be nice in the future.