A other worldly gun that has great power by charging up demonic lazer's. The Nightmare-Beta has a special attack in which Dante can hold the trigger charging up a giant lazer, releasing it will cause the lazer to bounce around the room hitting your target with great damage repeatedly. It has great use against every single boss except nelo angelo him being a small target. This gun can be found at the end of a trap path in mission 14 you must jump on tough ledges to retrieve it. Missing a ledge will cause dante to fall in a pool of acid slowly damaging you not to mention a few blades are down there.