Stokesy220

There are four Limit Break levels, and each level has two attacks to use. So, from level one, you start with one Limit attack. We’ll use Cloud as an Example. Cloud starts with Braver, so to get his next limit, Cross Slash, he has to use Braver a certain amount of times. So, for example, You might use Braver 8 times, and you’ll unlock Cross Slash. Once the Second attack has been unlocked, you need that character to kill a certain amount of enemies for them to advance to the next Limit level. I believe that the game starts counting for the second limit straightaway, you don’t have to wait to get the second attack first.

Now, Here is a list of this for all of the characters. The numbers may vary each game, but it won’t be by too much, maybe 5 either way for enemies killed, give or take 1 for number of limits used.
There are some strategies that can be used to get to the next limits as fast as possible. First of all, always use hypers on your party when you want to learn the second limit break of a level, it makes the limit gauge fill up much faster. Also, for the fastest results go to some difficult opponents, like at Junon before you go on the boat. Pull the alarm in the room with the soldiers to fight some tough battles that will fill up your gauge in no time. Just remember to constantly heal and go back to save every once in a while. A fast method of learning new levels of limit breaks is going to the forests outside of Junon. There you will encounter either 2 bird like monsters, or a lot of little monsters. Use All + Lightning Materia to make short work of the little monsters, this will give that character a lot of finishing blows quickly. As for the flying monsters, have the other two party members weaken it, and then use the All + Lightning to kill those. This should get 80 kills within 10 or 15 minutes.