Not Bad
I rather liked the animation in the video, far better than most of the shit in the portal, i just have a few constructive criticixms for your next flash.
1. Sound: Try to make the sound a bit more flowing. I noticed the sound just kinda stopped or started. Try to fade in, or connect the it to previous sounds, so it doesn't just, ya know, start.
2. As i said, i like the animation it self, however, they idea behind the animation is a bit overdone. If you can break away from the
Guy surrounded by other guys, kills guys after he seems like he'd loose
story, your animations will be more likely to get better reviews. A good story is integral to a good animation.
Good luck with future endeavors