 In addition to their "life" gauge that shows the amount of damage the player can sustain before losing a life, there is also a "power" gauge that determines the strength of their basic attacks, a "shot" gauge that shows the remaining ammunition of their current sub-weapon, and a "Ninjutsu" gauge that determines which spells the player can use.By destroying item containers located throughout each stage, the player can pick up power-ups marked by the letters "L", "P", "S" and "N" to fill out each individual gauge by one unit.When the player first picks up a "Shot" power-up, they will wield a shuriken launcher, which can be replaced with an automatic "Vulcan" gun, and then a supply of grenades, by picking up subsequent "shot" power-ups.