To the left of the beach, find the light elf corpse in the stone pathway near the ledge with the legendary chest. You can find the artifact on the ground beside the corpse.
You’ll need Atreus’ light arrows to activate this realm tear. You’ll get it after clearing the Ringed Temple of Alfheim and restoring the light. (see Chapter 4: The Light of Alfheim 2). From the beach, turn left to the open cavern with light crystals on the floor. Have Atreus shoot all three of them to activate the realm tear.
Defeat the two speed draugrs and loot the Pure Essence of Realms and Dust of Realms from the rift.
Go to the edge of the cavern where the light crystals are located then look for the raven barely visible on top of the pedestal where the light elf “hologram” is projected.
Follow the other tunnel with vine cores. Cut the lowest vine core across the gap then jump across. Turn around and line up your throw to cut all three cores as shown below. This will permanently remove the vine cores and free the wooden chest across the gap. Loot the wooden chest then jump across the gap again. Climb up the next ledge to find the legendary chest. Loot the Frost Giant’s Frenzy heavy runic attack from it.
This requires the Magic Chisel you’ll obtain in the later part of the story. This also hides This is found in a short tunnel to the southwest. This is where the valkyrie Olrun is located.
This is found inside the Hidden Chamber, right before entering the arena with the valkyrie
After entering the arena with the valkyrie, look up to the left to find the raven perched near the tip of a pointy branch.
Olrun shares a lot of similar telegraph attacks as her sisters. Her attacks include the following:
It’s better to attempt this fight after getting the Blades of Chaos and unlocking some of its runic attacks. That way, you’ll have four runic attacks at your disposal. It will be hard to go head-to-head with valkyries using normal attacks so evading their attacks and counterattacking with runic attacks is a reliable way of removing a good chunk of their HP quickly. You can still perform normal combos as long as you don’t get too greedy and you prioritize reacting properly to her attacks. Also, save your Spartan Rage as a life saver, preferably to recover your HP. While in Spartan Rage, you still have to avoid being greedy as sustaining damage will deplete your rage meter a lot quicker without recovering your HP.
After the battle, you’ll obtain the following items:
* Olrun’s Helmet (legendary quest item)
* Asgardian Steel x2 (legendary resource)
* Perfect Asgardian Steel (epic resource)
* Ivaldi’s Corrupted Mind (epic enchantment)
* Waist Guard of the Valkyrie (epic waist armor)