Very well done.
The animation was awesome, the art was great, I liked the music and it suited it well, the sound effects came off nice and the concept was really good.
One thing that kind of annoyed me was the detail in the faces we it zoomed in, perhaps try a simpler facial design ( as to keep with the stick figure theme). Just a thought any ways (it didn't particularly irritate me :P )
I personally disagree with Dutch-Spitfire, though this has been done many times, so have many other things.
Just because you like the idea of an animation so use it your self (with some mild differences to the idea) doesn't make your animation in any way inferior to the original.
This is especially taken into regard with stick figure animation, as stick figures killing each other is just that genres style.
Any ways, enough ranting.
Very well done.