Check every spot because the anomalies are good at hiding. You also might run into danger, but fear not because you can revive quickly thanks to Corridor codes.
You can dual-wield in this game and hold the blades on your shoulders like the toughest Chad ever. For increased luck when rolling, use Dungeon RNG codes.
You'll enter the Hyrule Castle Dungeon in Zelda ... This will lead you out into another long corridor - continue to follow the carpet until you run into a Darknut Lv.2. Use Echoes and Swordfighter ...