So for example, i read on a guide that to get the Limit Break Waterkick for Tifa, it says you have to kill 96 enemies. But I don't know what this means. Is this saying that Tifa will get the kill of a monster as long as she hits it, and maybe another character kills it, or does she have to have the finishing attack that kills the monster?
I read on ffshrine.org that to learn Waterkick, you have to kill eighty opponents with Tifa. Like Gajan-K stated, she has to be the character who finishes them. Cloud or anyone else doing it counts towards their limit break limits if applicable.