not bad

but very symple

what is that?!?

let the black stickman get killed? get outta here.

Meh.

Nothing new or intresting here, your animation is good but its way to short.
make it longer and add pour over some epic sauce and you could have a really good flash, take those skills further!

Too short, and not enough action

For one thing, this is too short.
It would be good in a stick movie, but it's no good.
Plus, why is this rated mature? :s
You could add at least sound, or add more features, but you can't submit something like this and expect it to do well.

CnC or Judging

You need to learn easing. I learned easing from Steel_Cold's tutorial from Deviant Art.
And also, when the gray stick figure punch the black stick figure, the black stick figure's body turns grey. Improve your skills okay. :D