While Fissure in the Fog is at the bottom of the expeditions list in Elden Ring Nightreign, you might want to tackle it right after Tricephalos or Gaping Jaw, as it's on the easier side. That's not to say it's easy, though—it's FromSoftware, did you expect anything less than cruel? To tick off another of the Elden Ring Nightreign Nightlord bosses off your hitlist, you'll need to know how to beat Caligo.
You'll need to prepare a few things to face this ancient ice dragon, which I'll go over below, but getting to grips with the best rune farming routes and legendary weapons is a good place to start.
