BrÃ 1\/4 nnhilde is left alone with Gunther and Hagen .
Siegfried then leads Gutrune and the bystanders off to the wedding feast , leaving BrÃ 1\/4 nnhilde , Hagen , and Gunther alone by the shore . Deeply shamed by BrÃ 1\/4 nnhilde 's outburst , Gunther agrees to Hagen 's suggestion that Siegfried must be slain for Gunther 's standing to be regained .