Agreed: the head is the best part by far.
However, the rest isn't really too robotic to me, more abstract.
It's also pretty blurry. I think going over the borders with a fine brush will do the trick though.
Cold steel is edgy :>
Also, the shins make me feel like #christmas#
Overall, the set is effective.
While more details would increase the value of the set, for personal use, i think it's great!
8/10
EDIT: Forgot to mention. one of the few works i've seen today that had good shading