Hogwarts Legacy: In the Shadow of the Undercroft Walkthrough

Walkthrough Points

Head towards the Defense Against the Dark Arts Class

You can start "In the Shadow of the Undercroft" near the Defense Against the Dark Arts class. Fast travel from the Astronomy Tower to the class and proceed directly to your destination.

Choose options freely with Sebastian

It is recommended to choose options freely during the conversations with Sebastian. It does not affect the progress of the quest later on, so feel free to choose.

Choices and Routes

Walkthrough: In the Shadow of the Undercroft

Meet Sebastian at the Astronomy Tower

To start the quest, first meet Sebastian near the Defense Against the Dark Arts class. Sebastian only appears at night, so it is recommended to investigate the destination during the day and let time pass.

Listen to Sebastian's story in the Undercroft

Next, follow Sebastian and investigate the secret passage to the Undercroft. Collect a total of three treasure chests inside before completing the conversation with Sebastian to proceed.

Learn Confringo and light the candelarias

After completing the conversation event with Sebastian, trace the spell pattern and learn Confringo. Once learned, cast Confringo at the three candelabras placed in the room to light them up and progress the story.

Exit the Undercroft after talking to Sebastian

After lighting the candelabras, talk to Sebastian again and make a promise to visit his sister Ann. Then, report about the incident at Gringotts. Once the conversation is finished, exit the Undercroft. Once you have met Ominis, the quest will be completed.

Rewards

Rewards	How to Obtain
Confringo	Automatically obtained during story progression

Trials of Merlin
Tutorial	Charms Class
Defense Against the Dark Arts Class	Weasley After Class
Welcome to Hogsmeade	The Locket's Secret
Secrets of the Restricted Section	Tomes and Tribulations
Herbology Class	Potions Class
The Girl From Uagadou	Merlin Trials

The Room of Requirement
The Hunt for the Missing Pages	Scrope's Last Hope
Ollivander's Heirloom	Prisoner of Love
Jackdaw's Rest	Flying Class
Room of Requirement	In the Shadow of the Undercroft

Until the 1st Trial
The Map Chamber	Percival Rackham's Trial

Until the 2nd Trial
The Helm of Urtkot	The Caretaker's Lunar Lament
Beasts Class	The Elf The Nab-Sack and the Loom
In the Shadow of the Estate	Astronomy Class
The High Keep	Back on the Path
Charles Rookwood's Trial

Until the 3rd Trial
Fire and Vice	It's All Gobbledegook
In the Shadow of the Mine	The Headmistress Speaks
The Polyjuice Plot	Niamh Fitzgerald's Trial

Until the 4th Trial
In the Shadow of the Mountain	Lodgok's Loyalty
San Bakar's Trial

Until the Final Boss
Wand Mastery	The Final Repository
How to Defeat the Final Boss

Post-Game Quests and Ending
Clear Time and Recommended Level	Summary of Post-Game Quests
Endings	Second Playthrough or New Game+
The House Cup

List of Main Quests