"Neutron annihilation, earth-blasting stars, happy angels, Colossus annihilation, dimensionality reduction strike, black hole annihilation. Open your eyes and see how many races in the galaxy were exterminated by that tyrant's ambition!! The Holy Emperor is a vicious humanist and an out-and-out war criminal??"
"What? You said His Majesty is a war criminal?? Oh my god, you damn heretic. Quick, call the fleet immediately to execute the extermination order. This planet needs divine purification."
PS: Elements of this book: wasteland, mechanical prosthetics, out-of-control AI, genetic modification, extraordinary awakening, interstellar warfare, empire building, and the indescribable Cthulhu evil god and subspace demon.