Doom Slayer goes back to Hell by fighting the Cyberdemon, who teleports himself and the Doom Slayer there in the middle of the boss fight. When the Doom Slayer finds the Crucible, it was being guarded by demons called the Argent Guards. The Doom Slayer kills them and gets the Crucible. The Doom Slayer then uses the Crucible to close the portal. After that, he fights Pierce, who has turned into the Spider Mastermind. After he kills Pierce, Hayden teleports him right back to Mars and takes the Crucible from him. With the Crucible, Hayden can restart Argent Energy production. Hayden then teleports the Doom Slayer to an unknown place, and right afterwards, the game's credits are shown.At sign