It's a nice tutorial, but there was something I noticed. The neck pieces sort of have a "lag" issue if you know what I mean. If I make the head piece moveable by the mouse, the neck objects don't exactly follow as smoothly as controlling the head. It's more noticeable if you move the head really slowly. Though I am unsure if it's fixable due to the script. Maybe it has something to do with the fact the neck objects aren't positioned on float values, but instead absolute values? Just my guess.
Otherwise, it seems fine as just an attack sequence. Though I set the FPS to 10 temporarily for my curiosity, and still noticed a a bit of lag between the head movement, and the neck pieces. Still, pretty good tutorial.