Quantum: Rise of the God-Slayer
The gods thought the age of slayers was over. Then the last Quantum awakened.
When Elea, the First Authority, fell to Chaos the world shattered. In retribution, she created the Quanta who descended to Earth and almost annihilated Chaos.
Almost.
Splitting himself into numerous fragments, he birthed gods who would carry his legacy onwards.
Unfortunately, a lone Quantum remains.
And he's going to annihilate Chaos once and for all—as Deus Interfector, the God Slayer.
They call him Rahiel: the Faceless Butcher, the Demon of the Borderlands. His likeness stains the walls of every city, mercenaries swarm for his bounty, and whispers of his cruelty poison the taverns.
But the truth is stranger.
Beneath the cloak and scars walks Quantum — a wanderer shaped in the aftermath of gods and monsters, forsaken by the hand of his own creator. He should have vanished into silence. Instead, a grieving child and the relentless hunt of men drag him back into a struggle that will stretch beyond a single city, into the fractured heart of existence itself.
As his power grows, Quantum turns his gaze upon the thrones of new gods. Against their dominion, he becomes both weapon and beacon — a desecrated entity reborn, and perhaps mankind’s last light in the encroaching dark.
It's a dark progression fantasy. Slow burn, high stakes, killer story.
It gets way tense from chapter 25 onwards.