There are other power-ups such as a longsword to destroy enemy projectiles, a pair of boots to walk faster and jump higher, a bottle of potion to take a hit from an enemy, and a stopwatch that temporarily stops the time limit. Both the longsword and the boots can only be used temporarily at first, but if the player acquires a second version of either while still wearing the previous one, they can be kept permanently until the player loses a life. Treasure items can be acquired for points as well. Keys can be acquired which gives the player access to item shops and treasure vaults. The player's own score is used as currency to gain power-ups and extra lives at the expense of a lower score. Defeated enemies will drop letter icons that the player can collect for points as well. If the player collects the required letters needed to fill out the "CAPTAIN SILVER" gauge at the bottom of the screen, an extra life is obtained.