Achilles' sword was forged with the intent of a demigod stabbing an ordinary man to death through a massive bronze and leather breastplate, then stalking off to do it over and over again.

The positions are a bit reversed, with the figure of legend and myth bearing in-born armor of bone and hide; but in the end it's all the same. In the hands of a man who's cut more beasts down for skin and meat than he can even begin to remember, the sword knows exactly where it has to go.