Chainsaw

The chainsaw (uncommonly referred to as "The Great Communicator") is a melee-based weapon that has appeared in every Doom title in the series. This weapon mutilates enemies close enough to contact. At 525 hits per minute, it is roughly a quadruple-speed fist. It is often used because it conserves ammo, its "rapid fire" works well on enemies with high pain chance, which minimizes damage in melee situations.