1. Pick up the glass bottle
2. There's a chest hidden inside of the fireplace, take the map from it and enter the code using the item frames.
3. A trapdoor will open, go to the basement and use the bottle to remove water from the cauldron. This will cause a part of the wall to break.
4. Get the lever from one of the barrels in the room on the other side of the hole.
5. Place the lever on the iron block hidden behind one of the holes.
6. Flip the lever, this will cause the iron doors on the first floor to open.
7. Right-click on the composter. You will find a code that yoou have to enter using the keypad.
8. A door will open, take the record from the jukebox and put it in the jukebox on the first floor.
9. The vent door will open, go into the vent, at the end of one branch you will find another code.
10. Enter the code you found using the keypad, another door will open.
11. In the room with colored buttons, input the two following codes: red-blue-yellow-green and blue-green-yellow-red.
12. A small room will open, the chest in the room is locked, there's a flint and steel hidden in that room.
13. Use the flint and steel to light the candles in the main room, a key will appear in the chest hidden behind the fireplace.
14. Use the key to open the chest and take the book from it.
15. Enter the code 211224 (21-12-24, December 24, 2021)
16. The exit door will open.