It's okay...
When you build up suspense in the beginning it goes on for a little too long. After a while the suspense begins to turn towards boredom. The way the man runs is... odd. He seems to run without actually SEEING anything worth running from at first. And just what the hell is that thing, it looks like a wisp from warcraft 3. It's odd to see a floating green mist but honestly, would someone try to shoot a floating fartish thing? The ending was a bit too common too. Compared to some other ppls first attempts at flash, this is decent, but nothing too fantastic. Nice artwork though.