Lewis Green was a professor hired by the General to recover an amulet from an archaeological dig in Europe. Upon returning home he discovered his girlfriend had left him for another man. He visited the General to present him with the amulet but realized the General's true nature. He took the amulet himself and was transformed into a powerful warrior along the lines of Achilles himself.
However, while powerful, the Achilles amulet requires life force to power it, and so each time it is used it will either take a year off Lewis Green's life unless he kills someone else and takes their life force.