Shadow of the Ninja/Bonuses

There are three ways to get bonuses in this game:
 * The most common way is to destroy containers with bonuses. One hit is enough.
 * Some cntainers are hidden. There is no way to see them but to if you strike it you will notice that you've hit something. It takes three hits or one ninpo to get hidden item.
 * Very powerful enemies drop healing potions on death.

Primary weapons
Katana gives you katana instead of kusarigama. If you already had katana, its level increases by one.

Kusarigama gives you kusarigama instead of katana. If you already had kusarigama, its level increases by one.

Secondary weapons
Shuriken switches your weapon to throwing stars until you spend them all or pick up bombs. Number of shurikens in one container: 20.

Bomb switches your weapon to powerful bombs until you spend them all or pick up shurikens. Number of bombs in one container: 5.

Additional bonuses
Healing potion restores part of your health.

Scroll increases your current weapon level to the maximum of 3.