"In ancient texts, there are stories about men who struck from the shadows, seemingly beyond the reach of death itself. These men were considered part angel, part demon. Their loyalty was to their families, their friends, and their kings. You crossed these men at your peril. And once crossed, there was no crossing back. They were fearless; men of honor who have been known throughout history by different names: Spartan, Viking, Samurai. Today, men...