The Gravemind is the level where Dr.Phil captures MC and the Arbiter then tries to rape them but Penitent Tangent wakes them up with a gunshot shot noise. Then they find out he shot himself and that they have been raped by Tartar Sauce's mother. But who cares cause theres a thing in this level's cutscene for tryhards on legendary. Master Chief:"Ok who the retard that put me here" Arbiter:"Can I kill you know you are my first target as a hitman" Master Chief:"Who are you?" Gravemind:"I? I am a monument to all your mom's sins"