First: Hold style headkick. Not too impressive.
Second: Certainly an improvement on the first.
Third: Great madman for the first 200 frames, and then it goes a bit downhill. Edit it from that point, I'm sure you'll be able to do some more damage.
Fourth: Again, good start, but needs editing from then on.
Fifth: Better dismembers this time, but still rather slow.
Well, good overall.