The Black Rune

Return to Týr's Temple and approach the sand bowl to have Atreus read the riddle.

Head to the northwest wall and read the runes to activate a platform.

Open the large doors and proceed to the central chamber where the Black Rune is located. Defenses will activate, creating rings around it.

To deactivate the rings, head east to a room with a closed wind trap.

Wait for an active wind trap to rotate near you, grab the Winds of Hel, and deposit it on the closed wind trap in the room. This reveals a wheel.

Spin the wheel to open two passages. Take the east passage first.

In the east passage, hit the large disc with spinning blades to create a gap leading to a coffin.

Return to the wheel and take the northwest passage. Time your dashes to avoid spinning discs. Freeze the final two discs by hitting the runic disc and recalling the axe when they align.

In the chamber at the back, Kratos will make discoveries. An inactive wind trap is in the center. Open the door south to return to the central chamber.

As you approach the Black Rune, portals open and Draugrs and Fire Nightmares attack. Use Runic Attacks and stay mobile.

After defeating the enemies, activate the Winds of Hel again, dash back to the previous room, and deposit the energy in the closed wind trap. Three Fire Nightmares will attack; use Atreus' arrows.

Use the wheel to reveal two more passages.

Before heading north, look east for a Nornir Rune on a shelf. Strike it.

Take the southwest passage. At the first block that drops, when it's at its lowest, find the second Nornir Rune on the right piston.

Backtrack and take the north passage. Hit the runic disc on the second block to freeze it. Wait for the first block to slide left, revealing the final Rune. Punch it quickly.

Open the Nornir Chest behind you for an Iðunn Apple or a random Enchantment.

Return and take the southwest passage again. Wait for the first block of spikes to rise, then throw your axe at the runic disc to freeze it. Wait for the next block to rise and run past into the alcove to the right. Pick up the sack of Hacksilver. Wait for the final block to rise and dash through.

You'll find another inactive wind trap. Open the door to the central chamber. Climb the wall to the right and defeat the Draugrs and Nightmares on the balcony.

Find the Lore Marker on the wall. Grab the active wind energy and deposit it on the inactive trap in front of you.

Follow the balcony to the end and kick the chain down.

Run to the open passage west, grab the Winds of Hel, and deposit it in the final wind trap in the west passage.

Use the final wheel to lower the Black Rune. Kratos will be entangled by vines and the platform will fill with water.