Archangel

Angels are on the brink of extinction.
Demons rule over mankind.
It has been a decade since Earth descended into ruin. Smothered in black clouds lies a land plagued with nightmares and pain, the aftermath of the war between Heaven and Hell. The archangel Uriel has finally been given leave to descend to Earth. He alone can renew the fight against the darkness and reignite the war both sides thought was over.
With a mission that seems impossible and a reluctant half-demon helping him, Uriel will have to go against everything he ever believed in if he wants to bring light back to the world. But the archangel soon finds that this new world is far worse than he ever imagined, and the vicious fangs of demons are the last thing he should fear.
Archangel is the debut novel from D. William Landsborough and the first in the Shadow's Advent series.