Much like the Dark Souls boss who can be defeated by throwing hundreds of dung pies over a wall, Elden Ring: Shadow of the Erdtree's dual-wielding magic knight can be killed without stepping foot inside her boss room.
Several players have figured out that Rellana, Twin Moon Knight, has no answer for a Tarnished standing outside her arena and throwing magic at her until she dies. X user Ziostorm posted a video demonstrating the dishonorable act, which just involves casting long-range magic at her through a fog wall. Not just any fog wall though, it has to be the one you can only reach by going behind her home, Castle Ensis.
