After you complete the Catfish's Maw dungeon, you receive a hint to go to the shrine. The Face Shrine is north of the Animal Village.
Get the Magnifying Glass
Now you can go to the mermaid statue in Martha's Bay using the hookshot. Check on it to put the mermaid scale in place.
When you put the scale in place, it reveals stairs. Go down and then go north to find the Magnifying Lens. When you go south, you will discover that there were hidden monsters in the room.
Now that you have the Magnifying Lens, there is a cave that you can find in Toronbo Shores, in the screen south of the monkey that is throwing coconuts. Bomb the cracked wall and go inside. Talk to the monster behind the table. This Goriya will trade a good item to you in exchange for whatever you have set to your B button. Put an item into your B button that you don't think that you will need (the shovel is probably a good choice) and talk to the Goriya. It will give you the Boomerang. The boomerang is even more powerful than the L-2 sword. You can give the Goriya the boomerang if you want your item back later.
Southern Face Shrine
Now go to the Face Shrine, which is north of the Animal Village. On your way, the owl appears and tells you to go to the south Face Shrine first. So go east and then south.
In the shrine, go south all the way, then west. Touch the statue at the far left to make it move. Go past where it was, then take the upper path.
Go north, then touch the statues on the left. Go past them, then go south, then west. Touch the statues that are blocking the path to the stairs, then go past them and go up the stairs. Go into the building.
Inside, lift the pots to get some arrows, then go north. You must battle an Armos Knight. Use arrows on it to damage it. Jump before it crashes to the floor so that you won't get stunned when it lands. After you have done enough damage with arrows, its armor comes off. You can continue to attack with arrows or just use your sword.
After the Armos Knight is defeated, it leaves behind the Face Key.
Read the Tablet
Go north and use Magic Powder to light the torches, then read the tablet up above. You learn something interesting about Koholint Island. After you are done reading the tablet, press a button. Then you can leave the shrine.
Outside, the owl will say more about what you learned.
Go to the Northern Shrine
Now leave the southern shrine. Go northwest and then go down the southern stairs into the water. Go south and swim onto the island with the statues. Touch the statue on the left to make it move. Then go down the stairs.
Go west past the Piranhas, then go west to the next screen. Use the Hookshot on the rock to get across. Go up the stairs.
Go northeast and push on the keyhole to unlock the shrine. Go back and go up the stairs, then enter the shrine.
Get the Power Bracelet Level 2
From the entrance, go west. There are Wizzrobes in this room that disappear and reappear in the same place. You can only harm them with arrows or bombs. It takes four arrows, or one bomb. They can be stunned with the Hookshot or Magic Powder. If you kill them, the door opens and you can go through to get 50 rupees.
In the Wizzrobe room, use the northwest exit. Make your way past the Mini-Moldorm and Spark, then follow the path to a room with a crystal switch and a Shy Guy. Put a bomb on the switch, then go to the northeast exit and wait for the bomb to make the blocks come up. Use the northeast exit.
Put a bomb on the east wall between the two torches. Go through the hole that opens.
Go around the room and kill the four hidden green Zols. Stairs will appear. Go down.
Carefully go west, avoiding the Giant Bubble that bounces around the two rooms. In the west room, go up the ladder on the left side of the room.
In the upstairs room, the blocks should be down. Kill the Mini-Moldorm, then use the Hookshot to stun the Wizzrobes, and kill them with bombs. Then go through the north door.
Open the chest to get the Power Bracelet L-2.
Use the Power Bracelet to lift the statues in the middle of the room, then use the one-way door in the north wall.
Get the Map
Hit the switch to lower the blocks, then put a bomb on the switch and go to the northwest exit. Wait for the bomb to make the blocks come up, then go through the northwest exit this time.
Lift the pot in the northwest corner of the room to find a button. Step on it to open the west door. Go through it.
Kill the Wizzrobes by stunning them with the Hookshot or Magic Powder, then use a bomb or four arrows to kill them. You can use an arrow to hit the crystal switch in the corner so you can reach all of the Wizzrobes.
When the Wizzrobes are gone, a chest appears. Open the chest to get the Map.
Get the Stone Beak
Go north, then east. Open the chest to get the Stone Beak.
Get the Compass
Go back to the previous room and throw a pot at the door to open it. Go through.
Go east to the next room. Open the chest to get the Compass.
Get a Key
Go up the stairs and hit the crystal switch, then follow the path to a room with a Bubble floating around. You can kill the Bubble with Magic Powder. There are two Wizzrobes here. Stun them with the Hookshot, then kill them with bombs or arrows. A key will fall. Take it.
Get 100 Rupees
Go back the way you came. In the room west of where you got the Compass, throw one of the big statues at the north door (go back to the Compass room and hit the crystal switch if the blocks are in the way). Go through the door that you threw the big statue at.
Open the chest to get 100 rupees.
Get a Secret Seashell
Go up the stairs to the north to reach a hidden island in the overworld. Open the chest there to get a Secret Seashell.
Get Another 100 Rupees
Go back down the stairs into the dungeon. Throw the two chess pieces until both of them are standing up. This makes the south door open. Go through.
Go back the way you came. When you reach the room with the Shy Guy, hit the crystal switch to make the blocks go up.
Go back to the room west of the dungeon entrance. Kill the Wizzrobes and go through the northeast door that opens. Open the chest if you didn't before, then lift the big statue and go through the north door.
Open the chest to get 100 Rupees. Then go through the west door.
Get a Secret Medicine
Go back to the dungeon entrance, then go east. Walk across the conveyor belts, being careful to avoid the Traps. Go east from the conveyor belt room.
Equip your shield and raise it to avoid getting hurt by the flying tiles. When all the tiles are gone, the north door opens. Go through.
Lift one of the big statues and throw it at the east door to open it. Go through.
Kill the four Wizzrobes in this room to open the doors. Then go through the the south door.
If you can't reach the stairs in the southwest part of the room, you will have to go back and hit the crystal switch in the room with the Shy Guy. If you can reach the stairs in the southwest part of the room, go up them and fall onto the raised blocks, then use the Roc's Feather to jump to the next raised block. Go up the stairs, then jump over the Trap and make your way to the northeast exit.
In the next room, open the chest to get a Secret Medicine. This item will automatically refill all of your hearts if you die, then it will disappear. You can buy more from Crazy Tracy, who randomly sells it for either 28 or 42 rupees.
Get a Second Key
Jump down from the ledge, then go north to the next room.
Go down the stairs, then follow the path through the shallow water to reach a chest that contains a key.
Reach the Mini-Boss
Go back the way you came until you reach a room with a locked door in the north wall. Go through that door.
Put a bomb in the middle of the north wall, then go through the hole that appears.
If Smasher picks up the ball, run away to try to avoid the ball when Smasher throws it. Use the Power Bracelet to lift the ball before Smasher reaches it, and throw it at Smasher. Repeat this until Smasher dies. When Smasher is gone, go through the north door.
Get a Third Key
Lift the statue on the left to reveal stairs. Go down.
Go down the ladder, but press Up to grab the lower ladder to avoid falling onto the spikes. Use the Roc's Feather to jump over the spinning Spark, then carefully jump toward the next platform and press Up to grab the small ladder. When the other Spark is out of the way, go down to the platform and jump to the left, then go left to the next area.
Go to the top of each ladder and press left to fall toward the next one. Press up to grab the next ladder. Do this until you reach the ladder on the left side of the room. Go up.
Equip your shield and raise it to avoid getting hit by the flying tiles. When all the tiles are gone, a key appears. Jump to it, then jump to the northeast corner and open the key block. Go north.
Get the Nightmare's Key
Lift the big statue and throw it at the door to open it, then go through.
Throw the two chess pieces until they are both standing up. The doors will open. Go through the west exit.
Go down the stairs.
Use the Pegasus Boots to dash past the Thwomps, then go up the ladder in the east room.
Use bombs to kill the Pols Voices. If you want bombs, hearts, and rupees, go north.
Otherwise, go south.
Put a bomb in front of the Dodongo Snakes to make them eat the bombs. Repeat this until they die. Go through the door that opens. If you don't have enough bombs, jump to the stairs in the northeast corner and go north, then go north again to find some flying bombs. There are also hearts and rupees in the next room.
In the room west of the Dodongo Snakes, use the Hookshot to go over the gap. Then unlock the key block and go north. Keep going north to a room with a chest. Throw a pot at it to open it. You get the Nightmare's Key.
Reach the Nightmare
Go back the way you came and jump off the ledge into the shallow water. Go south, then go up the stairs and make your way to the south door. Go through.
In the next room, kill the Wizzrobes, then go west through the door.
Go north, then go north again through the hole in the wall. Go north once more, then pick up the big statue on the left. Go down the stairs.
Follow the path like you did before. When you reach the room with the flying tiles, go through the south door.
This room has a Vacuum Mouth, and the doors are closed. To make the doors open, you have to kill the hidden green Zols in the room. There is one above, below, to the left, and to the right of the Vacuum Mouth. Carefully go toward the walls, trying not to get pulled into the hole by the Vacuum Mouth, in order to make the four hidden Zols appear. When you have killed all the Zols (or they have all fallen into the hole) go through the east door that opens.
Push the lower block to the right. Then kill the Wizzrobe on the northern platform. You can equip both bombs and the bow, then if you press both buttons at the same time, you will shoot a bomb. You can use this technique to kill the Wizzrobe more easily.
After the Wizzrobe is dead, the doors open. Jump to the northern part of the room, but don't let the Beamos look at you, because it will shoot a laser at you if it sees you. Go to the right side of the northern platform and push the block into the hole, then go north through the door.
If you light the two torches in this room with Magic Powder, the two spinning Sparks will turn into fairies.
When you're ready, go north through the Nightmare Door.
Use a bomb on Facade's face to hurt it. Then it will disappear. When it reappears, use another bomb on it. Avoid the flying tiles and pots. When the tiles and pots are gone, holes will start to appear in the floor. Move around to avoid those, or stay near the wall. When Facade is gone, take the Heart Container and go north.
Get the Musical Instrument
Go to the next room to get the Coral Triangle. The next hint tells you to go to the mountain.