Pictures of Yoshi, Princess Toadstool, Mario, Bowser and Luigi can now be seen. Then, look into the window on his left, as you enter. Visit Zelda at Hyrule Castle Garden at the beginning of the game. Behind a box is a poster of Link from The Legend Of Zelda: Skyward Sword. Kill the guards, and break the wooden boxes. While breaking out of your prison cell after getting captured, jump to the ledge on your left. Try to save this trick until you have a big wallet. If you remain on it when the drawbridge is up, you can collect three Red Rupees (worth twenty Green Rupees each). When you are on the edge of the drawbridge to Castle Town when night falls, the drawbridge will rise with you on it. A golden fairy will appear and restore your health and magic. Play 'Zelda's Lullaby' or 'Song Of Storms' when Navi goes to a random point and turns green. Successfully complete the game in Normal mode to unlock Master Quest mode. To unlock the last challenge, which is all bosses in sequence, defeat them all in Boss Challenge mode.
This allows you to fight any Boss at your house after they have first been defeated during the storyline.
After growing up but before talking to Sheik for the second time on the Time Temple to learn the Prelude Of Light, she will tell you that you can rest in your home to replay past battles.