Blood Paladin — Janrae Frank

Isranon is taken captive by an unscrupulous mercenary captain, and driven mad by tasting the blood of Anksha, the demon-eater. And in the background evil Gods struggle to become supreme in a world in which every living being is increasingly at jeopardy. As darkness deepens, can even a Dark Brother of the Light resist its onslaught? (Dark Brothers of the Light #5)