CLOUD

LEVEL 1:
BRAVER: Cloud jumps up and drives his sword down upon the enemy.
CROSS SLASH: Cloud slashes the enemy three times and sometimes paralyzes his opponent.

LEVEL 2:
BLADE BEAM: Cloud throws energy from his sword which hits a single enemy, then diffuses and hits the remaining opponents for slightly less damage.
CLIMHAZZARD: Cloud runs his opponent through. Then he jumps into the air, cutting the enemy as he jumps.

LEVEL 3:
METEORAIN: Cloud jumps into the air and throws down several meteorites, which hit the enemies multiple times.
FINISHING TOUCH: Cloud summons up a whirlwind, which casts away weaker enemies, and damages others.

LEVEL 4:
OMNISLASH: Cloud launches a volley of sword attacks against all enemies for major damage.

Omnislash can be acquired by trading in 32,000 Battle Points at the Battle Square at the Gold Saucer.

BARRET

LEVEL 1:
BIG SHOT: Barret charges up a major blast from his gun-arm.
MIND BLOW: Barret charges up a shot that takes away the target's MP

LEVEL 2:
GRENADE BOMB: Barret shoots out a grenade that explodes on all enemies.
HAMMERBLOW: Barret runs up and strikes the enemy, casting them into the air, never to return.
This attack will miss enemies that are immune to instant death.

LEVEL 3:
SATELITE BEAM: Barret calls down a laser strike from a satelite in space that hits all enemies.
UNGARMAX: Barret fires off several rapid-fire shots at the enemy group.

LEVEL 4:
CATASTROPHE: Barret charges up a massive shot in his gun-arm, launches up into the air and blasts a sustained shot upon the enemy group for massive damage.

Catastrophe is given to you by a woman in North Corel after you stop the train from crashing through.

TIFA

LEVEL 1:
BEAT RUSH: Tifa runs up and does a quick, four hit combo.
SOMERSAULT: Tifa does a backflip kick.

LEVEL 2:
WATERKICK: Tifa performs a low s#FFAAFFick.
METEODRIVE: Tifa gives her opponent a DDT.

LEVEL 3:
DOLPHIN BLOW: Tifa summons a dolphin help land a jumping uppercut.
METEOR SLAM: Tifa grabs her opponent, jumps into the air and slams them back down.

LEVEL 4:
FINAL HEAVEN: Tifa charges up her fist and drives it through her opponent hurling them into the air.

Tifa's limit breaks are cumulative and she will often change enemies when moving to the next attack in the slot.

Final Heaven is found at Tifa's house in Nibelhiem after Cloud gets his memory back. Play the piano in Tifa's room with Tifa in your party. Play the following notes:
PC: [Cancel] , [Switch] , [Menu] , [Page Up] + [Menu] [Page Up] + [Switch] , [Cancel] , [Switch] , [Menu] , [Page Up] + [Cancel] , [Switch] , [Cancel] , [OK] , [Cancel] , [Start]
PSX: + + + .

AERIS

LEVEL 1:
HEALING WIND: Aeris heals some HP for the party.
SEAL EVIL: Aeris blocks the enemy from using magic.

LEVEL 2:
BREATH OF THE EARTH: Aeris cures any status ailments in the party.
FURY BRAND: Aeris causes the other two party members to reach their limit break.

LEVEL 3:
PLANET PROTECTOR: Aeris makes the party invincible for a short time.
PULSE OF LIFE: Aeris fully restores the entire party.

LEVEL 4:
GREAT GOSPEL: Aeris fully restores the entire party and makes them invincible for a short time.

Great Gospel is found by talking to the sleeping man in the cave near Junon. Talk to him when the last two digits in the number of battles you have won is a multiple of eleven (11, 44, 266). He will wake up and give you Mythril . Take it to the house south of the Gold Saucer. The blacksmith inside will trade the Mythril for the contents of the large or small box. Choose the small box and retrieve the Great Gospel.

RED XIII

LEVEL 1:
SLED FANG: Red XIII charges at his opponent, creating a force wave in front of him. When he crashes through, the enemy is tossed about.
LUNATIC HIGH: Red XIII casts Haste on his allies and raises the party's Defense %.

LEVEL 2:
BLOOD FANG: This attack is similar to Sled Fang. This attack, however, drains the HP and MP from his opponent.
STARDUST RAY: Red XIII calls down large pieces of stardust, which land on the enemy for moderate damage.

LEVEL 3:
HOWLING MOON: Red XIII casts Haste and Berserk on himself.
EARTH RAY: Red XIII attacks the enemy group with a five-hit combo.

LEVEL 4:
COSMO MEMORY: Red XIII causes a massive amount of damage with an impressive fire summoning display.

Cosmo Memory is found in the safe in the Shinra Mansion in Nibelhiem after defeating Lost Number.

YUFFIE

LEVEL 1:
GREASED LIGHTNING: Yuffie runs up and slashes her opponent before jumping back and performing a long-range attack.
CLEAR TRANQUIL: Yuffie restores some of the party's HP

LEVEL 2:
LANDSCAPER: Yuffie summons the power of the Earth and throws a massive force of energy at all enemies.
BLOODFEST: Yuffie goes on a rampage and attacks the enemy group several times.

LEVEL 3:
GAUNTLET: Yuffie calls forth a beam of light from the ground causing damage to all enemies.
DOOM OF THE LIVING: Yuffie attacks the enemy group several times.

LEVEL 4:
ALL CREATION: Yuffie summons an incredible force and fires it through the enemy group for massive damage.

All Creation is acquired after you defeat Godo in the Pagoda in Wutai.

CAIT SITH

LEVEL 1:
DICE: Cait Sith throws out dice. The sum of the dice is multiplied to equal the damage.
The number of dice thrown is proportional to Cait Sith's level.

LEVEL 2:
SLOTS: Step right up! Everyone's a winner with Cait Sith's Slot limit break.
= The other two party members disappear and Cait Sith grows huge. His stats max out and the enemy is frozen.
= Cait Sith uses a random summon materia from your collection thus far without spending any MP.
= A mog appears and fully restores the party's HP and MP, and cures any status ailments.
= Every physical attack is a critical hit for the remainder of the battle.
= Six toy soldiers appear and attack the enemy.
= All enemies, including bosses, are instantly destroyed. Very rare.
(any order) = Instant Death for the entire party. Also very rare.
?-?-? = A toy box appears and deals minor damage to the enemy.

Cait Sith only has two limit breaks.

Vincent

LEVEL 1:
GALIAN BEAST:
BERSERK DANCE: After transforming into the Galian Beast, he attacks the enemy several times or...
BEAST FLARE: He launches a volley of fireballs which explode for damage to the entire group.

LEVEL 2:
DEATH GIGAS:
GIGA DUNK: Vincent transforms into a Frankenstein's monster-like character and performs a slam-dunk with the enemy as the ball or...
LIVEWIRE: He lets loose with an electrical discharge.

LEVEL 3:
HELLMASKER
SPLATTERCOMBO: Vincent changes into a chainsaw wielding maniac resembling a mix of Leatherface and Jason Voorhees. He slices into the enemy five times or...
NIGHTMARE: He casts a spell causing Poison, Sleepel, Confu, Silence and Mini on an enemy.

LEVEL 4:
CHAOS
CHAOS SABER: Vincent transforms into a demon and slashes at the enemy group or...
SATAN SLAM: Vincent summons a huge skull from the ground under the enemy. The eyes of the skull flash, which can causes Instant Death randomly. Then the skull issues forth a gas that swirls around the enemy for massive damage.

Chaos is found in Luceria's Cave under the waterfall near Nibelheim. Reach the cave using either the Shinra Submarine, or a Black, Green, or Gold Chocobo. Enter the cave with Vincent in the party. After leaving the cave, fight at least ten battles and return. Chaos, along with Death Penalty will be sitting on the throne.

CID

LEVEL 1:
BOOST JUMP: Cid jumps into the air and lands, spear first onto an enemy.
DYNAMITE: Cid lights a stick of dynamite with his cigarette and chicks it at the enemies.

LEVEL 2:
HYPER JUMP: Cid jumps into the air and lands, striking all opponents, causing random Instant Death.
DRAGON: Cid summons a dragon that drains the HP and MP from one enemy.

LEVEL 3:
Dragon Dive: Cid jumps into the air, and repels off the enemy group to strike again and again, causing random Instant Death.
BIG BRAWL: Cid runs into the enemy group and continuously attacks them.

LEVEL 4:
HIGHWIND: Cid orders the Highwind Airship to drop a volley of bombs on the enemy from massive damage.

Highwind is found in the cargo hold of the sunken airplane, Gelnika.

How the system works
From the first limit break (EX: Braver), use the limit break 6-8 times. To get to level 2, you must have that character kill 70 enemies. Repeat the process of using the first limit breaks, then killing enemies to raise your limit break levels.

EXAMPLE:
Cloud Level 1
Braver - Use Braver 6-8 times to get...
Cross Slash - Kill 70 enemies to get...
Cloud Level 2
Climhazzard - Use Climhazzard 6-8 times to get...
Blade Beam - Kill 70 enemies.
ETC...

For Cait Sith's level 2 limit break, you must kill 40 enemies with Cait Sith.

For Vincent's level 2 limit break, you must kill 40 enemies with Vincent.