Above: Batman has lost his mind.
The Batman of Zur-En-Arrh prowls the streets, beating the agents of the Black Glove half to death with a baseball bat and ultimately confronting their leader in his stronghold at Arkham Asylum. There, Black Glove kingpin Dr. Jonathan Hurt feebly tries to convince Bruce first that he is actually his father, Thomas Wayne, and when that doesn't work he claims to be Satan (I guess) and offers to let Bruce live on the condition that he become his manservant. Somewhat predictably, Bruce rejects this offer, and in the ensuing melee a helicopter explodes and Batman is presumed dead.
BUT! In fact, Bruce survived the explosion, and is immediately called away on Justice League business to investigate the murder of the New God Orion, who was killed by a bullet of radion fired backwards through time. In the course of his investigation into this act of deicide, he is captured by the servants of Darkseid and is subject to weeks of psychic torture before overcoming his captors through the sheer force of his will, finally coming face-to-face with the Dark God himself. In his final moment, Batman breaks his vow to never kill or use a firearm -- and, armed with the same bullet that was used to kill Orion, he achieves the ultimate fulfillment of his life's mission by murdering the cosmic personification of evil, before falling victim to the dread Omega Sanction, becoming hopelessly dislodged from time and space. Batman RIP.