God of War - Valkyrie Hunt - 04 - Göndul
Found in Muspelheim, Göndul is quite annoying to get to. You have to complete five trial sets before you can fight her. I went for her next because you get the wrist armor for beating her and she's not as a hassle to fight as Hildr -- the one you fight in the fog that puts you on a timer. After beating three Valkyries already, she's quite easy to get through.