Level 13
Collect the PLIERS and the EMPTY JAR, both highlighted in green.
Move to the room to the right.
Find 12 hidden objects listed at the bottom of the screen, in any order, circled in green in the image.
The hidden objects are randomized and may be different in your playthrough.
You will receive PLASTER.
Go back to the previous scene and continue to the left room.
Collect the ROD, OIL LAMP, and HOSE, all circled in yellow.
Open the faucet with the PLIERS (1).
Set the EMPTY JAR in the sink and fill the water into the JAR (2).
Return to the main corridor.
Spread the PLASTER on to the dirt in front of the door (1).
Pour the WATER on the FLOUR (2).
Take the solidified FLOUR that turned the key.
Open the door with the FLOOR AMULET GYPSUM and click it again to go through.