Well done
You've got nice graphics, a good and proper set of sounds and music (though you might wanna search for music we haven't heard, it makes the whole thing more interesting), it's fast and entertaining, BUT the concept is anything but original. One stick guy comes in and kills all these other stick guys, he says predictable one-liners and is by no way motivated to do all those things. It would be slightly nice if you'd have a plot or something, and maybe even some more then your average murdered wife/family story.
You got the skills man, now find something you want to tell us instead of randomly having stickfigures murder each other.
Cheers