Place the SAFE COMBINATION on the safe (M).
Spin the dial (N) in the following order and stop after each number: counterclockwise to 15, clockwise to 55, counterclockwise to 10, counterclockwise to 35, and clockwise to 20.
Take TROPHY 1/3 (O).
Return to the Coat Room.
Move the carpet; use the CROWBAR on the trapdoor.
Take TROPHY 2/3 (P).
Zoom into the pipes and place the VALVE HANDLE on the pipes for a puzzle.
Select the pipes in order (1-5).
Take the DOOR HANDLE (Q).
Return to the Side Entrance.