Locate all the items on the list (J).
You will earn the CLOCKWORK KEY.
Look at the clock and use the CLOCKWORK KEY in the slot (K).
Take the SILVER SPIDER and the 3/4 MIRROR FRAGMENTS (L).
Enter the trapdoor (M).
Look at the spider mini-game on the shelves; place the GOLDEN SPIDER and the SILVER SPIDER on the board to activate the mini-game.
Swap the golden spiders with the silver spiders by making the following moves: A2 to B3, E2 to D3, B3 to D1, D3 to B1, A4 to B3, B3 to C4, D1 to E2, E4 to C2, C2 to A4, B1 to C2, C4 to A2, E2 to C4, C2 to D1, A2 to B1, B1 to E4, C4 to D3, D1 to B3, B3 to A2, and D3 to E2.
Take the HOSE CLAMP and the PLIERS (F).