Level 8. Zilla's Villa (2)

In the south of the platform of water with a blue banner, there is a crack. Blow it up to find a Guardian Head.

In front of the bronze key door, stand on the statue's head. It will slowly drop down, along with the column in front of it, revealing some items.

Shoot the gong where there's a yin-yang symbol on the floor. A panel will open behind it, revealing some items.

In the big fireplace, face north. The picture on the left allows you to go through it.

Check the old shield in the big fireplace. A red panel will open, giving some refreshments.

After you enter the silver key door, go through the painting to reveal another secret.