I liked it
I'm not sure what your flash backround is so i don't know what i should expect of you, but assuming you've done a bit with flash it was good for what it was. It lacked a bit of story, it was kinda just "Random dude bang bang everybody's dead" which is fine but if your going to do that add a little more flare. A loading screen would have been nice although you didn't need one because of the size of the flash it would make it look more well done. Your characters all moved on a set path or so it looked like, maybe add some moving limbs in your next movie to give it more realism, and maybe some sound effects for the gun shots or deaths. Okay criticism aside i thought it was good, the colors were nice, the mood was captured , your characters all looked very well done and with a little more work i could see your movies or maybe even a continuation of this being very nice. All and all i give it a 6 because the effort was there, you just need a bit more practice :]