Dante, with help from Kat, gradually takes down Mundus' operations and slays the demons who manage them on his behalf. During the final stages of his campaign, Dante witnesses a SWAT team raid the Order's headquarters, killing all of Vergil's followers. Dante rescues Vergil from Limbo but is helpless to protect Kat from being brutally beaten and taken to Mundus. Dante then kidnaps Lilith, Mundus' demon concubine carrying his unborn child, and offers to trade her to Mundus for Kat. During the exchange, Vergil brutally slaughters Lilith, killing Mundus' heir. He, Dante, and Kat narrowly escape as Mundus tears much of the city apart in an outburst of power that weakens the "Hellgate", a portal to the demon world within his stronghold in Silver Sacks Tower. Kat, recovering from her injuries, leads the brothers through a detailed plan to infiltrate the Tower and defeat Mundus. Dante draws Mundus out of his lair and Vergil seals the Hellgate, rendering Mundus mortal. Mundus forms a massive body for himself from the city's rubble and confronts the brothers, but Dante is able to reach his original, physical body and destroy him. Limbo collapses into the human world, making demons visible to humans and creating chaos and pandemonium worldwide. With Mundus dead, Vergil reveals his true intentions: he intends to rule humanity in the demon king's place. Vergil argues that as Nephilim, he and Dante must protect humans "from themselves"; he also abandons Kat, regarding her as worthless simply because she is human. Dante is appalled by his brother's true nature and the two fight, with Dante emerging victorious. Kat stops Dante from killing his brother and Vergil leaves in disgrace. Faced with a world now infested with demons and abandoned by the only family he has left, Dante questions his own identity and purpose. Kat comforts him by claiming that he is "Dante, nothing more and nothing less". With his hair now completely white after using the full extent of his demonic power, Dante decides to devote himself to protecting humans by hunting down demons.