Darksiders by Ari Marmell
Ages before the events of Darksiders and Darksiders II, two of the feared Horsemen - Death and War - are tasked with stopping a group of renegades from locating the Abomination Vault: a hoard containing weapons of ultimate power and malice, capable of bringing an end to the uneasy truce between Heaven and Hell...but only by unleashing total destruction.