2. Use the Lumos charm to light the torch: The torch is located in the trophy room, on the left side.
3. Use the Arresto Momentum charm to stop the moving stairs.
4. Use the Reparo charm to fix the broken mirror.
5. Pull the lever near the broken mirror.
6. Defeat the two Inferi.
7. Climb up the ladder.
8. Exit the trophy room, take an immediate right, and head down the hallway.
9. Use the Reparo charm to fix the broken bridge.
10. Cross the bridge.
11. Pull the lever on the left side of the room.
12. Defeat the three spiders.
13. Climb the ladder.
14. Talk to Argus Filch.