A textbook poor animation.
The animation itself was incredibly jerky, and not fluid at all. It looked more like a slideshow than like a proper animation. The graphics were incredibly dull as well. The same old Madness sprites were used for the umpteenth time, using the same guns, in the same grey environments.
The sound was almost passable. The gun sounds were as good as you'd find anywhere else, but the voices were awful. The same voice was obviously both heroes, and he was speaking into the microphone very quietly. Speak louder and with more energy into the microphone, the effort really shows.
Finally, the story and plot. The story was incomprehensible and poorly executed. Some things in the story flat out made no sense, like you made a mistake then realized it too late to edit. For instance, the "why did my disguise disappear" part. Or the Deus Ex Machina found in the "magnet that only attracts guns" which is completely, utterly ridiculous. Also, the character is "Gordon" not "Morgan." Morgan Freeman is an actor, Gordon Freeman is the Half Life hero.
However, I can tell you put a good deal of effort into this. You obviously had some sort of idea of how it would play out, and went through the effort to at least find the Madness sprites for your flash. Your skills will improve with time, but for now, all you can do is practice and make more flashes.