Pretty cool
The animation really was exceptional with the characters movements and the explosions and such but I have to say that I'm not very fond of the whole stick figure battle thing. Its great to look at, but I was just bored after a little while.
If you want to keep people's attention you should encorporate characters that at least have expressions, and it doesnt hurt to at least have a short intro story. (why are they fighting?) The people who made this obviously have a lot of talent but watching stick figures battle for 5 minutes can be boring.
In short, be more creative! You have butt loads of talent, use it!