This made me itch to play Dissidia 012 again, and oh my god I'm so bad at this game.
How do I into Jecht's combos? I can't believe they don't give you an indication of when to press the buttons or anything. Hell I didn't even know Jecht had combos until randomly seeing a youtube video about it.
You have to time it perfectly. You begin to get a feel when to execute them when he starts to slow his assault.