Killing god, Book 1: Darkness from the Light

In the Divine Realm, to kill a god is to become one yourself. But who would dare try?Alex Connor's life was turned upside down when the god of light Arre summoned him to the world of Lehask. Alex went from being an ordinary high school student who loved fantasy games to living in a true fantasy world. Despite that the only monsters he'd ever killed were on his computer screen, Arre compelled him to kill the Demon King.
Against all odds, the former nerd gamer completed the mission, but he was badly wounded and the friends he brought along to help him fell. As payment for his bittersweet victory, the evil avatar attempted to kill him and murdered the girl he loved. Following his narrow escape from Arre, Alex is found by a powerful mage who hides, heals, and apprentices him. Using transformative magic, Alex makes himself stronger and harder as he plots his revenge.
But, to take on the demiurge who betrayed him, he'll need to be nearly invincible.and ready to face rivals on other planets in the Divine Realm if and when he becomes a god himself.