Link Smash!

In Hyrule Warriors, Link can wield both the gauntlets and the ball and chain from Twilight Princess. However since it isn't DLC, that means you find it in the game. My problem is I don't know how to unlock them, and I've beaten Legend mode (the story mode) hoping that I was going to find it during Legend mode to begin with. So if anybody knows how to unlock them, please let me know.