Tower of the Gods
Get inside the tower. Go right, disembark from the King of Red Lions and when the water draws out, open the door on the right. Use the Boomerang, then the sword to get rid of the Chuchus. When the water rises again, climb on the south ledge. Drop a bomb here to blow up the wall, then open the chest and pick up the Map. You can also blow up the wall on the far right top by climbing on a crate to get a Joy Pendant. Get out, get back on the King of Red Lions and go north-east. When the water level is rising, climb on the ledge. Lift the statue, place it on the glowing pedestal and open the door. Go ahead, jump into the water or on the ground and place a crate on the pedestal. Then, climb the ladder and cross the bridge. Lift the urn, cross the bridge back, get out and place it inside the alcove on the left to lower the fence.
Get back on the King of Red Lions and go east where the fence used to be. Place each statue on a glowing pedestal and open the door. Jump into the water, then when the water level is low, push and/or pull the crates to create a line to the other side of the room. Take your time to test the result, then pick up a stick from a vase, light it, jump on the crates and light both torches. Pick up the Small Key from the chest and get out.
With the King of Red Lions, sail west, throw a bomb on the left wall and go ahead. Use the Boomerang to clear out the Chuchus, climb the stairs and open the door. Get rid of the skull, get the Compass from the chest and get out. When the water level is getting down, light a stick, light the two bottom torches and pick up a Joy Pendant from the chest. Go down and unlock the door. Clear out the Chuchus, then climb the stairs and pick up the urn. As soon as the water level gets down, get out, go left and place the urn inside the alcove to stop the water stream. Get back on the King of Red Lions, go north and follow the now-walkable way.
Toss a bomb on the Beamos (the bomb will explode upon contact), then lift a statue, drop it on one of the three pedestals, then put another statue on another pedestal and step on the remaining one. Get on the platform acting as a lift, then jump on the next two and on the ledge.
Open the door, then the one to the east. Cross the platform and open the next door. Climb the stairs, look at the stele and call the statue. Then carefully go ahead with the statue following you. Carry it and cross the gap with it. Go through the door, carry the statue to the platform and open the door. Then the statue will by itself head for its stand. Climb the stairs in the middle of the room, take a look at the stele and use your Wind Waker to learn the Command Melody.
Open the west door, get rid of the skull with the Deku Leaf or your sword, then throw the Grappling Hook at the two following bars hanging from the ceiling to go forward (slide down at the very bottom of the rope so you get more momentum). Open the door. Cross the room using the Grappling Hook, wake up the statue and stand on the pedestal. Play the Command Melody and move the statue across the bridge. Take back control and go across the room again using your Grappling Hook, lift the statue and open the door. Place the statue on the glowing pedestal, then go right and open the door. Fight off the incredible warrior using your swiftness. As soon as he raises his sword, move aside and swing your sword to damage his armour, then his body. Upon defeating him, pick up the Hero's Bow from the chest. Get out and shoot an arrow at the eye in front of you. Get rid of the skulls, go back to the left using your Grappling Hook, go across the room along with the statue and get out. The statue will go to its platform by itself, and you will be able to go forward through the north door.
Before going on, if you want to, you can pick up the content of the two previous chests:
Go back through the east door, defeat the Wizzrobe by firing an arrow at it, jump on the platform, shoot an arrow at the eye to the right, jump on the other platform, then all the way to the top. Open the door, throw a bomb at the Armos' body and pick up the Joy Pendant from the chest.
To get the remaining chest, from the room with the four doors, go through the south one, down a level, open the door, go back west in the Compass room, shoot an arrow at the eye and pick up the Treasure Chart from the chest.
Back in the north room (previous paragraph), pick up two of the statues and throw them on the left platform. Jump on it, throw a bomb at the left wall (the bomb must explode when it touches the wall, not before!) and go ahead. Stand on the first circle and play the Wind's Requiem to reveal a chest, but also to wake up the Armos! Fight those enemies by using the L lock and by throwing bombs at their bodies' open gap. After defeating them, pick up the Treasure Chart from the chest. Get out and swim to the other side.
Open the door to the east. Jump on the platform, get rid of the skull with the Deku Leaf or an arrow, then jump on the next platform. Shoot an arrow at the eye on the left platform, jump on this very platform, then towards the chest north. Pick up a Small Key from the chest, then jump on the platform on the left, then on the one behind you, shoot an arrow at the eye on the right and jump on its platform. Shoot again at the right eye (on the entrance's side), then jump on the still platform to the south. Pick up a Joy Pendant from the chest. Go back towards the door using your Deku Leaf, get out and climb the ladder.
This time, throw two statues on the right platform and cross to the other side using the second platform. Unlock the door and get in. Climb on the block and use the Deku Leaf to fly over the beams. Then call the statue and play the Command Melody to make it go through the beams and place it on the glowing pedestal. Go ahead, lift the statue and get out. Drop the statue somewhere while you get rid of the enemy with your bow, then cross the room once more. Pick up three statues, throw them on one of the two platforms, then go back to the previous room to pick up the statue and cross the room with it. Open the door to get back to the room with the four doors, where the statue will reach its rightful place, which will create a light beam. Get in this beam to reach the third floor.
Destroy the Beamos by using bombs or avoid them (one of them conceals a Joy Pendant), then pick up the two statues and put them on the two glowing pedestals. Step on the third one, then open the chest and pick up the Big Key. Now get rid of the Armos by hitting the red spot on their back and stay away as soon as you hit them. Open the newly unlocked door north and climb the stairs. When the blue Beamos are firing their beam, use your L lock and shoot an arrow at their eye to defeat them. In front of the door leading to the boss, refill your ammunition and keep a bottle ready to catch a small fairy hidden in one of the pots, then open the door.
Gohdan
For the Zelda aficionados, this boss is a merging of Bongo Bongo from Ocarina of Time and RamRock from Oracle of Ages. Start by shooting two arrows at each eye inside the boss' hands to temporarily disable them. Then, aim for his head and shoot two arrows at each eye. As soon as his head lands on the ground, rush to it and throw a bomb into his mouth. Follow these steps twice more to defeat him. During the fight, avoid the fire streams, and if the hands push you out of the platform, climb back on it as fast as possible! As you may have already guessed, the boss will drop some arrows when you are running short of them. Pick up the Heart Container and enter the light beam.
From the roof of the tower, climb the ladder and use the Grappling Hook to ring the bell, which will mysteriously lead you to Hyrule Castle's ruins.