It looks good! Overall, it's really good. I really like your cartoon style. There are two things I would recommend. First, get a more interesting plot and soundtrack. Second, make your animations more fluid. They felt a little stiff. At 4:26, I was expecting to see some side-swing-rolly-psuedo-3D action but instead got a front-on dodge scene. At 4:56, the fighting was a little slow and mechanical. Also it would have been cool to see some more running in this. I know the focus was up close because it was supposed to be actiony but a prototype vs. alien running scene would have been really cool. Also, (last thing, sorry), the glaring eyebrows felt a little overused. Okay, done.