Task 8 - Altar of Air

Drop the note to put it back on the moon surface. Space travel back to the house. Go to the basement and turn left twice to face the shelves of glass retorts. Take the first scroll (diagram of crane) and third scroll (diagram of catapult) on top of the shelves:

Turn right twice and take the mirror above the water tank:

Take the hammer on the shelf and combine it with the mirror in the inventory to make the mirror fragments. Drop the hammer to put it back on the shelf. Return to the attic and open the top drawer of the bedside cabinet. Take the pen: