Connect the GOLEM HEAD to the door (H); push the button (green).
Read the letter (I).
Remove the painting (J).
Open the compartment (K); take the SILVER FORK (blue).
Play the HOP.
You receive the CROSSBOW PART (L).
Collect the SAFE PANEL with the SILVER FORK (M).
Connect the CRANK to the crossbow (N); take the ARCHER FIGURINE (P).
Put down the CROSSBOW PART (O).
Turn right, then go up the stairs.