How to get legendary weapons in Elden Ring Nightreign

It shouldn't come as a surprise, but Elden Ring Nightreign is pretty cruel. Bosses can wipe you out in the blink of an eye, and the punishment for death—losing a whole level—is quite harsh. Even with friends tagging along, you'll have your work cut out for you against Nightreign's bosses. To improve your chances of success, though, you can acquire legendary weapons.

Marked with a gold background, legendary gear is the highest quality you can get, with high base stats, the maximum number of passive effects...