The Enochian Wars: Armageddon Unleashed

Planet Nibiru has returned from its twelve thousand year orbit around the sun, and the inhabitants, a race of giant gargoyles, will again reign as humanity's gods. After the deployment of electromagnetic nuclear bombs, Earth is left devastated and defenseless. Jack Savage, an NYPD officer, along with his cynical partner Gilmore Boyle and Ol' Willie-be-Good, a homeless crack addicted Vietnam veteran, begin the daunting quest of defeating the gargoyles and preventing the harvest of humanity.