Right at the end of the Crossover Stories DLC, there’s a light puzzle. This AC Valhalla What Dreams May Come Light Puzzle Guide will tell you how you can solve the final puzzle in the Cave of Gold so you can complete the DLC and enjoy a brief bit of bonding between Kassandra and Eivor.
This is actually a really simple puzzle, unless you’re like me and you spent 45 minutes aiming the lights at the strange object hovering over the door. There are switches, two, one on the left of the door and one on the right, those are the things you need to light up with the light from the pedestals.
AC Valhalla What Dreams May Come Light Puzzle Guide
At the very start of the room there is a single pedestal that can be pushed. You need to push this pedestal so that it takes the light and then you direct it at the pedestal directly in front of you, over the small gap with the wooden beams. You then move to that pedestal (you may need to destroy the large hanging rock in the center of the room first).
You align the second pedestal with the lock on the right of the door. Then you move to the Pedestal that is above the door and to the right. That Pedestal you aim down at the one directly below it and then aim that one at the lock on the left side of the door. That will open the way ahead and you can progress.