In Chapter 3, you need to view the lit mural windows
in order - downstairs, upstairs left, upstairs right.
You need two things:
* Phosphorus cotton candy
* Soapy mop
In your starting room you need to turn on the cotton candy machine (Middle machine, plug behind the green thing to the left), then switch to the Phosphorus candy (green) with the switch on the left. Grab an
anchovy on a stick from the right machine, then eat it to get a
stick. Use the stick with the cotton candy dispenser to get
Phosphorus cotton candy. Go out of the candy room, and upstairs at the back. Use the Phosphorus cotton candy with the light to charge it.
Exit to the right to get to the lift. Open the hatch on the right of the lift and pick up the
mop,
bucket and
soap. Go back downstairs, and exit to the left outside. Go round to the water on the right. Use the bucket with the barrel of water. Open your inventory. Combine the
bucket of water with the
soap, then that with the
mop to get a
soapy mop.
Re-enter the building. On the first mural, open the hatch. Use the
Phosphorus cotton candy with the hatch to illuminate it. Press

to view the mural (1). Go upstairs. Repeat with the mural on the left (2). Then use the
soapy mop with the dirty mural on the right, repeat the cotton candy steps and view the final mural (3).