A little short, but interesting.
I had only two problem of any real importance. The length of the flash was somewhat short, and it lacked originality. I don't care if he throws a gun away after firing it once (it adds a different perspective and makes an attempt at originality in that sense anyway). I liked that the animation was pretty fluid, and the blood looked pretty realistic. If you had added an extra dimension to the flash, it would've been better, as it felt like there was something missing.