Remove the screws with the SCREWDRIVER (Z) to acquire the HEAVY GAUNTLET.
Take BATTERY 1/3 (A).
Take GEAR 1/6 (B).
Take the note (C); remove both mountings with the SCREWDRIVER (green).
Play the mini-game (blue). Solution (D).
You receive the POOL KEY. Walk down.
Open the door with the NAME PLATE (E).
Take GEAR 2/6 (F).
Take the KNIFE (G).
Play the HOP (H).