Examine the statue; place the HORN in the slot (D).
Use the CHISEL to get the ENERGY CRYSTAL (E).
Examine the antiques to activate a HOP (F).
Play the HOP (G).
You receive the TRIDENT EMBLEM.
Walk forward twice to the Guardian Door.
Examine the lock; place the SICKLE EMBLEM and the TRIDENT EMBLEM in the niche (H).
Open the compartment; pull the lever (I).
Place the ENERGY CRYSTAL in the slot (J).
Enter the doorway to the Guardian Chamber.
Walk down three times; examine the antiques to activate a HOP.