Inside the excavation site, Blazkowicz fights Nazi guards and prototype "Übersoldaten", and makes his way to a boarded-up entrance to Castle Wolfenstein's underground crypts. There, he finds that the ruined and decaying sections of the castle has become infested with undead creatures, which are attacking the castle's garrison. After fighting his way through the underworkings of the castle, Blazkowicz arrives too late at the site of a dark ceremony to prevent the resurrection of Heinrich I. At the ceremony, SS psychic and "Oberführerin" Marianna Blavatsky conjures up dark spirits, which transform three of Deathshead's "Übersoldaten" into Dark Knights, Heinrich's lieutenants. She ultimately raises Heinrich I, who turns her into his undead slave. Blazkowicz destroys the three Dark Knights, the undead Marianna Blavatsky, and eventually Heinrich I. In the distance, "Reichsführer-SS" Heinrich Himmler remarks how matters have been ruined as he leaves for Berlin to face an expectant Hitler.