Could start a nice SF
You hit a fine balance between story and action. It has this exciting feeling of "this could really happen in future" you can find in good SF books.
The "hero" is extra strong and has lightning reflexes, but he raises questions among normal people because he seems crazy (and certainly is !).
The "hero" does slightly impossible actions. Enough to let the viewer think "amazing" yet being plausible because of the headphones.
Apart from that, animation is correct, even if art lacks a bit. Sounds fit nicely. And again, I think your best achievement with this flash is this nice plausibility feeling.