Mystery Dungeon: Shiren The Wanderer
Note: This game is also titled Fushigi No Dungeon: Fuurai No Shiren DS .
Completion bonus
Successfully complete the game. Then, ask one of the blacksmiths in a town to upgrade your pickaxe. Leave it with him, then return after an adventure to retrieve it. Your upgraded pickaxe will now be unbreakable.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original