Slay the Gods: Each God I Slay Costs Me a Feeling Forever

[Dark, antihero, power progression, intricate worldbuilding, angsty but satisfying, Cthulhu] I slew eight gods and lost eight emotions forever. When I could no longer feel fear, joy, or love, I discovered that the ninth god was the God-Slaying Blade inside me. Become a god, or become a cripple. I chose a third path: Become the only god in the world, then declare, henceforth, there will be no gods in this world.