Series mode different difficulties

[QUOTE="Lelkdude"]

I finished series mode recently and was wandering if there are more difficulties to it, if so how do I unlock them

[/QUOTE] To unlock Expert Mode in series, you first need to clear all songs from a certain FF game on challence mode. so say if you want to play FFIV Expert Mode in Series, you first need to complete all Expert songs from FFIV in challence mode. Same goes if you want to try and unlock ultimate.