Dark Redemption by Justin Miles

Some heroes and villains are not born. They ascend. They are the cursed, the disowned, and the outcasts of the human and Shattered worlds. The boogeymen in the dark. They are seers. After his family was slaughtered by two monsters made from the darkest of nightmares, Logan Blake became a seer, a human who was affected by a strong magical presence early in life. He now works as a contractor, a mercenary working in the Shattered Community. Now with his only ally, a forbidden elf-mage hybrid named Samantha, he is offered a contract that threatens the future of the Shattered World. With enemies hiding in the shadows, will his skills and abilities thrust him into his destiny, or will echoes of the past be his downfall?