Level 11. Sumo Sky Palace (2)

Open the panel located on the left side of the gold key door.

Check the red chair situated between the two slicing mechanisms. The chair will sink, revealing a passage. Proceed through this passage and activate the switch on the other side to encounter another slicing mechanism. Collect the ammo here.

This secret is located opposite Secret #2, on the other side of the slicing mechanism. Examine the panels in this area, but be cautious when jumping. A Guardian Head enemy will appear.

In the area with columns that move up and down, jump onto the outer perimeter wall. Traverse around to the other side of the large rock to uncover numerous pick-ups.

Near the top of a ladder, you will encounter an enemy that shoots fireballs. Navigate to the southwest side and destroy a crack in the wall to find some ammo.