Back 4 Blood features plenty of new monsters for fans of zombie-shooters to take on head-to-head from the towering Tallboys to the monstrous Ogres, but one Ridden variant takes the cake for being a new interpretation of the classic horror monsters: the Abomination. The Abomination is the final boss of Back 4 Blood and is a huge Ridden that's mutated far past the normal levels seen to that point in the game. In the final act, the monster begins attacking Fort Hope and it's up to the cleaners to take destroy the Abomination and give the other survivors enough time to escape the settlement.