How to Complete the Mr. Mushroom Side Quest in Hollow Knight

Mr. Mushroom is a secret NPC in Hollow Knight who offers an interesting side quest that culminates in a special ending and unlocks the “Passing of the Age” achievement. To begin, you’ll need to equip the Spore Shroom Charm to communicate with him. The quest involves finding Mr. Mushroom in several locations throughout Hallownest. Once you’ve found him in each spot and spoken to him, you’ll trigger the secret cutscene and unlock the achievement.

Step 1: Equip the Spore Shroom Charm

Before you start, make sure to equip the Spore Shroom Charm. This is necessary to understand Mr. Mushroom’s dialogue. You can find the charm by defeating the Mantis Lords in the Mantis Village area.

Here’s everything you need to know to complete the Mr. Mushroom quest!

Step 2: Locate Mr. Mushroom Across Hallownest

The Mr. Mushroom side quest requires finding him in various Hallownest locations in a specific order. After each discovery, speak with him to continue. Here are the locations:

1. Kingdom’s Edge: In a small cave to the left of the tram station area. Available as soon as you reach this area.
2. Fungal Wastes: Near Cornifer’s map shop in a small alcove.
3. Kingdom’s Edge (Again): Return after Fungal Wastes to find him in the same spot.
4. Deepnest: In the bottom left corner of the room below the failed tramway. Navigate carefully.
5. Howling Cliffs: Inside Nailmaster Mato’s house.
6. Ancient Basin: After the Broken Vessel fight, in the next room.
7. Fog Canyon: Left side of the room just below the Overgrown Mound.
8. King’s Pass: At the start of the game, easy to overlook.
9. Queen’s Station: Near the entrance to Queen’s Gardens.
10. Hidden Station: After unlocking the tram in Ancient Basin, use the tram system to access it.
11. Stag Nest: Unlock all Stagway stations and speak with The Last Stag in Dirtmouth to access it.

Use the Stagway fast travel system to quickly navigate the map and save time while searching for Mr. Mushroom.

Step 3: Trigger the Secret Ending

Once you have located Mr. Mushroom in each of these spots and spoken to him, a secret cutscene will be unlocked, which leads to a special ending. You will also receive the “Passing of the Age” achievement for completing the quest.

Additional Tips:

• The quest must be completed in order. If you skip a location or don’t visit them in the right sequence, you won’t be able to finish the quest properly.
• Ensure you have plenty of time to visit these locations, as some can be difficult to access, especially in areas like Deepnest and Fog Canyon.
• You may need to re-enter areas to find Mr. Mushroom again in some of the locations.

The Mr. Mushroom side quest is a fun and rewarding challenge in Hollow Knight. By following the guide above, you’ll unlock a special ending and earn the “Passing of the Age” achievement. Don’t forget to equip the Spore Shroom Charm to communicate with him, and be sure to visit each location in the correct order.

If you have any questions or need further help, feel free to ask in the comments below!