Pretty Average
Well, first off, I want to commend you guys for working on flash at such a young age. Most 13 year olds could only dream of making something like this. As for the flash, it wasn't bad. The animation was a bit choppy, and the graphics were rather simple, but clean enough. The major problem I saw was how the violence was animated. Getting stabbed by a knife would produce a much larger bloody mess. You should have animated a spurt of blood as he got stabbed, and put a little bit more blood afterwards. Also, try animating the stabbing motion a bit faster. It seemed like your character was just poking his enemies with the knife instead of jabbing it into them. Pretty good stuff nonetheless. You dudes have potential.