Sneaky and manipulative, Shadowfists corrupt the teachings of Gorn to justify their sinister world view; The massacre of all those who stand against them through any means necessary. They combine unarmed fighting with the dishonorable tactics usually favored by Rogues and Assassins.
This is a Prestige Class for Monks, and they retain the original class's Prime Requisite, in this case, dexterity. Shadowfists have strayed too far from the light to ever become Priests, like Monks can, but they can become Assassins, albeit later than Rogues.