I know this is my first play through. I just want to know though the conditions it takes to unlock every thing. I wasn't aware of the Birth By Sleep ending conditions from the Kingdom Hearts 2 Final Mix, was wondering if there's anything similar?
I've heard there's a Secret Episode and a Final Episode. I want to make sure I'll get that as well.
On what difficulty level you are planning to start Birth by Sleep? I suggest you choose the same difficulty for all three characters.
For critical mode the unlocking condition are the lowest. I completed all three stories on critical mode, and then I collected all Xehanort reports in the game. Each character has some of the 13 Xehanort reports. That unlocked Final Episode,which is the true ending of the game and also serves as epilogue. To unlock the Secret Episode(I think this if you play on critical) you have to complete Final Episode.
I remember reading somewhere, that unlocking the Final Episode isn`t even possible on Beginner mode, so you have to at least start with Normal, or Proud.
So, for short:
Beginner: Not Possible
Normal: To unlock Secret Episode, and Final Episode, you have to complete the journal 100%. All bosses, MX reports, stickers etc... You have to do this with every character.
Proud: All Xehanorts reports collected, and beaten all three stories.
Critical: For me the last episode unlocked when I completed all three stories, and then I collected Xehanort`s reports. The Secret Episode unlocked when I finished Final Episode.
Hope this helps!