The Girl in the Tomb

The Earth and humanity had finally begun to recover from the disastrous rule of the Metal Gods, nigh immortal machines that had pushed both the planet and all living things to the brink. The Ice Age was finally ending, and humanity was starting to spread its wings again into a new, yet familiar world. But the strife that had preceded the Metal Gods rise had never completely gone away. The surviving enclaves of humanity again began to push on each other, promising to renew old conflicts and grudges. And in those tense times, a young revolutionary makes a potentially dangerous discovery.

That gods can be very hard to kill.