8
Items
You'll find treasure chests in various locations. Break them open to reveal an item inside, walk over it to pick it up.

Note: The effect of the Darts and Power item will be lost once you clear the Scene or lose a Life. However, if you enter a Boss battle with either item, the effect will remain, even if you lose a Life. Also with Darts and Power, you can deflect some enemy Ninja’s throwing stars (but not bullets).