In the Shadow of the Mountain – Hogwarts Legacy Main Story Walkthrough

In the Shadow of the Mountain – Hogwarts Legacy Main Story Walkthrough

Join Sebastian as you search for the third and final piece of the Undercroft triptych, hoping to unravel more about Isidora's powerful and dangerous magic.

Meeting Sebastian and Charging Ahead

  • Location: Head to the northwest coast of Marunweem Lake to meet Sebastian. He’ll tell you that Ranrok’s Loyalists have discovered a new cavern—likely where the final triptych piece is hidden.

  • Goblin Camp: Climb the winding paths and reach a Goblin camp. Sebastian charges in headfirst, and you’ll need to deal with the enemies as you see fit. Afterward, you’ll have a heart-to-heart with Sebastian, convincing him to slow down and think things through.

Climbing the Mountain and Entering the Tower Tunnel

  • Stealth or Combat: Continue your ascent up the mountain, facing more Goblins along the way. A small camp awaits, which you can either sneak past or battle through. Eventually, you’ll reach the Tower Tunnel.

  • Spider Ambush: Inside the tunnel, you’ll face a swarm of Thornback Spiders. Clear the area and loot the first Collection Chest.

Clearing the Tunnel and Collecting Chests

  • Collection Chest 1: Near the start of the tunnel, burn the spiderwebs with Incendio or Confringo to unlock the chest.

  • Collection Chest 2: In a large room filled with more spiders (including Matriarchs), clear another spiderweb and grab the second chest.

  • Rune Door Puzzle: Unlock a Rune Door by hitting three symbols in quick succession. Inside, you’ll find Isidora’s journal entry and face off against a Mountain Troll and spiders. Defeat them and repair the walkway to proceed.

Boss Fights and Final Triptych Piece

  • Giant Room and Rune Door: Navigate through a large room with sunlight streaming in, casting Depulso and Levioso to clear debris and reach the next Rune Door.

  • Final Piece: After unlocking the door, climb and grab the final piece of the triptych. Use the enchanted stone wall to return to the Undercroft.

Uncovering Isidora’s Memory

  • Secret Pensieve: Place the final triptych piece in the wall to reveal a Pensieve, showing Isidora’s memory of removing pain from her father. Bragbor the Goblin arrives to help store the magic she removes for later use.

  • Sebastian's Hope: Sebastian is convinced this magic can save his sister, Anne. While you remain unsure, you agree to consider the possibility.

What’s Next?

The adventure continues in Lodgok's Loyalty! Ready for more? Check out our Essential Tips and Tricks page for more helpful advice on navigating your magical journey!