Legend of Zelda: The Minish Cap, The

Partway through the Temple of Droplets, you will come to ride a lily raft through some icy rooms. North of a room with flies (west and north of the refight with the first mid-boss) is a twisty room with a block puzzle. Use the raft to reach the first gate switch, but then abandon the raft and swim east, to a dead end. When you return, your raft should be gone, but if you cut across land to the end of the room, you should find it in the northeast, having already bypassed the puzzle. In addition, if you leave through the northeast door and come back, the block puzzle will be permanently solved.

To get the sound test , get 130+ figurines.Show the guy outside the cafe. He'll unlock Treasure Hut.(House with robot on top).

During certain points in the game, you will come across hidden Sword Dojos who will teach you a Special Sword Technique. But they will only teach you the Technique after you have a certain Item or have completed a certain task. Below, is the location of the Sword Dojo and the Requirement to learn the Technique

When you fuse kinstones with the postman running everywhere in Hyrule Town,
a girl will go into the post office next to the stamping guy. You can buy the swordsman newsletter for a huge price. Each issue contains tips to get around the secret areas of hyrule.