Parasitic Armored Arachnid: Gohma
    Goma is a parasite who was created to curse the Deku Tree.  She dwells in a deep cavern from within the tree itself, and possesses one eye.  She produces offspring who are vicious and also have one eye.
Tips:
    When you enter Gohma's lair, go into first-person and scan the ceiling.  Once you spot a light the battle will begin.  Use a Deku nut to stun Goma, then hit her with your sword.  She will then climb up the will and crawl along the ceiling.  Gohma is invincible unless you stun her.  She drops three eggs onto the ground, which produce 'mini-gohmas'.  It will help a lot if you use your slingshot and kill the eggs before they hatch.  When all three mini-creatures are killed, Gohma will descend to the ground.  She will lunge at you once, then pause.  This is a good time to whip a deku nut at her.  Once she is injured, she will climb up the wall again.  Once you hit Gohma five times, she will die.

Infernal Dinosaur: King Dodongo
    King Dodongo lives in the deepest part of the Cavern.  It is a large lizard capable of breathing intense flames.
Tips:
The battlefield of King Dodongo is basically a ring, with lava in the middle.  If you move in front of King Dodongo he will breathe a large burst of fire that spans half of the ring.  Before he does this throw a bomb into his mouth.  He will choke and be paralyzed.  Hit him with your sword and he will get back up.  K.D. will roll into a ball and run around the battlefield, crushing you if you get in his way.  Just keep throwing bombs into his mouth and hitting him until he dies.

Miniboss: Bigocto
Tips:
   This miniboss shouldn't be too hard to beat, but you need to know its attack pattern. The battlefield of Bigocto is a circular room with a spinning SPIKED platform in the middle. Bigocto runs around the room at an alarming speed, faster than you. It has a hole in its behind(hehe) which serves as its propulsion(hehe). This is its weakness. Approach Bigocto 's front and stun it with your boomerang. When it recovers it will spin around and run the other way. Keep Bigocto targeted and stun it from behind, then hit it with your sword. When it recovers, Bigocto will turn in YOUR direction. Back away and stun it. Repeat this process until Bigocto bites the dust.

Bio-Electric Anemone: Barinade
Barinade is a an electric parasite. Its main part of its body is a round chunk covered by six jellyfish. Five tendrils shoot electricity.
Tips:
    When you start off against Barinade target any one of its tendrils and pound away with your boomerang. Keep beating down each of its tendrils, but watch out for the electric bolts they fire out. When you hit the tendrils enough the jellyfish will detach and fly around Barinade's body, which moves around the room. The exposed body is its weakness; throw the boomerang to stun Barinade. The jellyfish will fall out of the orbit of Barineau's body and sit on the ground. Hit as many jellyfish as you can with your boomerang to kill them, as they serve as protection for Barinade's body. Once all of them die you can stun Barineau easily, then hack away with your sword. The pattern to killing Barinade's exposed body is: Stun,kill,stun,kill, pretty self explanatory. If you need life there are heart pots around the room, but keep a fairy handy just in case.

Evil Spirit From Beyond: Phantom Gannon
Phantom Gannon is a creation by Gannondorf himself, to prevent the Forest Sage Saria from leaving the temple. Phantom rides a black horse and wields a magical spear.
Tips:
    When you first enter the ring, six paintings surround you. Walk to the center of the ring and try to escape. Phantom Gannon will pop out and reveal his true self. Keep your back to the last painting Gannon came out of and keep your bow ready. If you see a gleam in the shadows train your bow onto it and wait for Gannon to come. Shoot him before he has a chance to fire his electric beam. If it hits you the beam will drain 2 hearts of your life. Shoot Gannon 3 times and he will dismount and float in the air. Z target Gannon to strafe around him. Gannon will fire a ball of energy at you. Use your sword to deflect it back at him, as no other attack will work. You may have to play a tennis match between Gannon, as he can hit the energy ball back at you also! If Gannon gets hit, he will fall to the ground, paralyzed. Take advantage of this opportunity and JUMP ATTACK him. Gannon will fly in the air again after you plug in a few hits. It took me 3 energy balls and at least 5 jump attacks to kill him. After you win, the real Gannondorf will chastise the clone and 'kill' it.

Subterranean Lava Dragon: Volvagia
Volvagia was a dead dragon that was revived by Gannon. He sought to feed the entire Goron race to the beast to prevent anybody from rebelling against him. Volvagia is vicious and deadly.
Tips:
Volvagia's battlefield has several lava holes in it, which the dragon itself pops out of. The first time Volvagia appears it will stick only its head out of a hole. Hit the head with your hammer, then hit it with your sword. Volvagia will dive back into the ground. Keep your back to the hole where it last was. When Volvagia comes out again, it will fly into the air and breathe fire. Run around and avoid both the fire and the dragon itself until it goes into a hole. Once Volvagia pops its head out again repeat the same tactic as before. After it dives back in the ground it will fly out of a different hole, and drop boulders on the battlefield. Run around and avoid the rocks until Volvagia goes back into the ground. This is basically the pattern of Volvagia's attacks. Volvagia has a really cool death scene, but you can see it for yourself.

Conquer Yourself: Dark Link
Tips:
Kinda reminds of Zelda II, doesn't it? Dark Link is a mini-boss which you must beat to get the longshot in Water Temple. It will replicate your movements, so if you sidestep, Dark Link will too sidestep. It will attack if you get too close, so don't engage in a swordfight with it. Haul out the megaton hammer and hit it once. Dark Link will disappear into the ground. Turn around and target it again. Keep hitting Dark Link until it is defeated.

Giant Aquatic Amoeba: Morpha
Morpha is an amoeba that dwelled within the Water Temple. It uses water as a weapon against you in the form of tentacles.
Tips:
The most important thing to remember when fighting Morpha is keep your distance. Morpha grows a water tentacle when submerged and uses it to choke, strangle and throw you. If you get caught you will lose about 3 hearts. Don't fall in the water in the center, as you will find it difficult to evade Morpha. Grab the red center of Morpha with your longshot, then hit it with your sword. Use Biggoron's Sword or a jump attack to do extra damage. Keep doing this tactic, and you shouldn't lose any life killing the amoeba.

Phantom Shadow Beast: Bongo Bongo
Bongo Bongo is a shadowy monster with two disembodied hands and three eyes. Your battlefield is its drum, hence the beast's name.
Tips:
In order to harm Bongo Bongo you must stun both its hands with the bow and arrow. One hand will form a fist and smack you silly, and another will crush you with its palm. You will die from these attacks unless you stun the monster, and fast. Most players bless Z-targeting in this fight. Z-target one hand and shoot an arrow, then stun the other with the same tactic. Activate the Lens of Truth to find the red eye. Z-target and shoot this, then close in and hack away. Use the Biggoron Sword if you have it, because you won't need it for any other part of this battle. If you use the Biggoron Sword, you can kill Bongo Bongo after stunning it twice.

Miniboss: Iron Knuckle

Tips:
This Iron Knuckle is different from the other ones mainly because it is massive and it is more powerful. Avoid his axe and definitely use Biggoron Sword, it will make life so much easier. Keep a pillar in between you and the Iron Knuckle, so that he'll smash the pillar and three recovery hearts pop out. Once you kill this Iron Knuckle the path to the sorceress sisters will be cleared.

Sorceress Sisters: Twinrova
Koume and Kotake are the sorceress sisters, and the surrogate mothers of Gannondorf. One is mastered in the element of fire, and the other in ice.
Tips:

When the fight begins stay on the center platform and z-target any sister. Keep both in your sight, and when one charges up(red wave is fire, white wave is ice), z-target that sister and move right in front of it, your mirror shield raised. If you happen to miss, the fire blast will burn you, and the ice will freeze you, causing continuous damage. If you angle the shield right, the blast should deflect of your shield and continue to fire. Move your shield at an angle so that the energy that is deflecting off of your shield hits the opposite element that you are deflecting. Hit the sisters twice each with this method, and they will merge into one TwinRova.

This time instead of deflecting assaults, you must absorb them. TwinRova will fire either ice or fire bolts. Use your mirror shield to absorb three blasts of one element in a row, and the shield will fire all the absorbed energy back at TwinRova, who will be stunned. Jump to the platform where she fell, and jump attack until she gets back up. Jump back onto the central platform and raise your shield again. Repeat this process until the sorceress sisters are frozen toast(heh heh).

Great King of Evil: Gannondorf
So, you made it this far, eh? That's good, but don't think your troubles are over...
Tips:

As soon as you start the battle against the Evil King, back away from Gannondorf. He'll smash a ring of the floor down(where you were standing) and separate his centre platform from the rest of the room. Face Gannondorf directly and wait for him to fire an energy attack, then hit it back at him. This is similar to the Phantom Ganon tactic. The energy blasts are 3 hearts' worth of damage. When Gannondorf gets hit by his own attack, draw your bow and fire a Light Arrow to stun him. He will drop down to his platform, so jump across the gap and slash him as many times as you can. It is highly recommended that you use the Biggoron Sword. After you stun him a few times the energy he throws will fly faster. This shouldn't be a problem, so give it your best shot and kick the bastard's a**!!!!