Its a lot like that Happy Tree Friends show, but instead of mindless violence occuring spontaneously with absolutely no reason in chain reaction, mindless violence occurs with perfect reason with well executed reason...
Because of this, I'm willing to vote 3. With my rating, I'll mention the lack of good music to accompany the cartoon is a part of why it didn't get a vote of 4, but you did good, good enough for a 3.5.
The blocky sketchy character look is probably a part of your style, so I'm not taking major points away because of that, if only that the flash could have used finishing touches to make it look like you tried coloring within the character and backgrounds, which oddly were missing lines and were overlapping colors with other things at some points.
You did good. I hope to see more good stuff from you. I hope you even make great things!