Guts vs Malenia
Now I obviously didn't beat her legit and I did modify Guts in this fight to be faster so if you want to see a legit fight between Malenia and Guts I recommend you check out Al Ex as he's made numerous videos with his Guts build fighting the bosses of Elden Ring.
The music used in this video is the God of War 2018 soundtrack, namely the valkyries theme and Surtr's trials theme.