a bit one-sided
the animation was pretty good, but it seemed to be that only one stickman would lead, kill, have to reload or something and eventually die. try adding more of an "arena" element where many people would be fighting at the same time. not just one guy with a grenade launcher/bow/uzi/ect killing several poorly armed sticks before being destroyed to make room for the next guy.
also, it strikes me as quite odd that you could build a helicopter and a jetpack in full 3d using Swift 3D, but you still constructed the background in 2D.. im sure making a 3d background would have made for an interesting style and some improvement.
the concept of a stickfighting arena is, unfortunatley, very unoriginal, and it has become the practice of many to put such animations with just simple sticks blowing each other up with the same motions time and time again. i suggest that, with your skill, (and i think you've definetly got talent) you go and put some real time and effort into an orignal concept, which will help you stand out more.