Walking involves the hips/torso to move up and down. Robots don't even walk like that. Go back and review walk cycles and watch people, see how they walk. Lip sync was cool decent but the voice work was pretty bad. Dialogue is laughable. And then out of nowhere action starts and... well... so far the best thing I've seen. Where the hell did that come from? Seriously, that was awesome. Why not put that much effort in the other parts of the animation? The eating was awkward looking, you should try eating like that and note the differences. Use a mirror. Chewing was awful.
tl:dr - Your action scenes were the best part of this "practice" and you need a lot of work everywhere else. Lip sync wasn't too bad either.