Warning! The following guide contains major spoilers for God of War: Ragnarök's late-game missions and boss fights!After the credits roll on God of War: Ragnarök, after all the death and destruction, there is but one true enemy standing: Gna, the new Valkyrie Queen. After cutting a path through Kratos' allies during "The Realms at War," she failed to protect the All-Father when he needed her most. She now awaits Kratos in the flame-licked depths of Muspelheim, vowing to either avenge Odin's death, or join him in Valhalla.