Key

It is needed to open the door.

Sword

Equipping it will raise your attack.
You can get it at the Weapon Lab.

Silver Sword

It will more raise your attack than the Sword.
If you clear the quest (SILVER CALLENGE), you can get it at the Weapon Lab.

Gold Sword

It will more raise your attack than the Silver Sword.

Silver Cup

It is needed to clear the quest (SILVER CALLENGE).

Gold Cup

It is needed to clear the quest (GOLD CALLENGE).

Blue Diamond

It is needed to clear the quest (DIAMOND CALLENGE).

reasure Chest

It is needed to clear the quest (TREASURE CALLENGE).