Sea of Death — Tim Waggoner

Diran, once a feared assassin, has turned his back on murder, seeking the life of a wandering priest. But in the seas of the Lhazaar Principalities, peace is rarely found, and even justice must be bought in blood. A new power has risen, hoping to conquer the east with an army of beast men, and only Diran and his companions can stop them.

The concluding volume in the critically-acclaimed Blade of the Flame series that follows a former assassin trying to change his life and set the world to right.