Character Classes Help
So I was playing the game and I'm on final boss of chapter 4 now but I didn't really feel like taking the boss on yet, so I went back to create and level up some new characters. I noticed that there are some monster classes that I haven't unlocked yet even though I went past the level I was meant to unlock them at. So I was wondering if anyone could help me with this?
Also on another note how do you unlock the angel (Celestial Host) class? I mean on the original my friend just went online and unlocked it but I don't know if that will work on the vita or how to do it for that matter.
Maybe I'll do this later . . . or maybe even never.