Heart Piece 7
Enter the main building and go up the stairs to the second floor. Roll into the railing while facing the chandelier to cause it to fall. Collect the Piece of Heart on the ground of the lower floor.
Heart Piece 8
After you break the chandelier in a method as described above, complete the three tasks the owner gives you for this Piece of Heart. You need to speak to the owner when he has a thought bubble above his help to start a task.
Deliver the Hot Pumpkin Soup to Commander Eagus within 5 minutes. Eagus is the guy inside the Sparring Hall. Just fly straight to the Knight’s Academy and you should be OK.
After finishing the Earth Temple, go to the backyard of the Lumpy Pumpkin and help Kina carry some pumpkins. You need to move left or right to counter-balance the pumpkin stack. Take your time and don’t rush.
Some time after obtaining the Goddess Harp, perform alongside Kina at night. You can use a bed at the back of the Lumpy Pumpkin to sleep until night. Use the young guy on the left to co-ordinate your movements. It helps if you strum the harp from left to right (or right to left) while the guy waves his arms. Feel free to improvize halfway through, when nobody is waving.
Fun Fun Island
Heart Piece 9
For this one, you must first retrieve the Party Wheel for the owner of the island. Once you do, play his Dodoh’s High Dive game. Go through all five bonus rings without hitting a single balloon, then land on the multi-colored space.
Heart Piece 10
For this one, you need to activate Goddess Cube 23. This Goddess Cube is in the Temple of Time area. You reach it by riding the mine cart nearest the Temple of Time across the gap. You’ll need to charge up a Skyward Strike and use it to hit the Goddess Cube as you go. The chest is found on Beedle’s Island, on the high plateau you have to dive onto.
Heart Piece 11
For this one, you’ll need to activate Goddess Cube 5. It is found in the Deep Faron Woods, near the gap found to the south of Skyview Temple. Just land on the island to find the corresponding chest, which contains a Piece of Heart.
Heart Piece 12
You’ll need to find Goddess Cube 2 for this one. It is found in the Faron Woods, after obtaining the Water Dragon’s Scale. Start scaling the Great Tree’s trunk along the winding path. Once you reach the alcoves on the left, look over the opposite edge. Line up with the Cube below and dive to it.
You can also wait until later and Clawshot up there from one of the roots below. Either way, the corresponding chest is found in the volcano-esque island south of Skyloft. You can dive in and try to reach the ledge by tilting the Wii Remote, or you can Clawshot to the ledge. On it, the chest will contain the Piece of Heart.
Heart Piece 13
For this Piece of Heart, you must first activate Goddess Cube 16. This one is found at the Volcano Summit of Eldin Volcano, in the water spring area. You must dive off of the ledge nearby and maneuver Link around the large rock in front of the ledge to find the Goddess Cube on a small ledge.
Once you activate it, go to Bug Rock and land on the southwestern side by diving from your Loftwing. The chest with the Piece of Heart is there.