These are unlocked upon the completion of the game..
Battle Records: Complete the game once.
Bonus EXP Display: Complete the game once.
Event Recap: Complete the game once.
New Opening Movies: Complete the game once.
Sound Room: Complete the game once.
Theatre: Complete the game once.
Toggle Battle Animations: Complete the game once.
Maniac Mode: Complete the game once in hard mode
Characters
Unlockable Characters:
Aran: Part 1, Chapter 3: Speak to him with Laura.
Calill: Part 2, Final: View the info conversation before 2-F.
Devdan: Part 2, Chapter 3: View the info conversation before 2-3.
Fiona: Part 1, Chapter 7: Joins automatically if she survived 1-6.
Gareth: Part 4, Final: Joins automatically if he survived part 3 of the final chapter.
Haar: Part 2, Prologue: Speak to him with Marcia.
Heather: Part 2, Chapter 1: Speak to her with Brom or Nephenee.
Janaff: Part 3, Chapter 8: Speak to him with Ike or Reyson.
Lehran: Part 4, Final: Joins automatically after viewing Ike's memory scene (second playthrough or higher)
Meg: Part 1, Chapter 4: View the info conversation before 1-4.
Muarim: Part 1, Chapter 7: Joins automatically when Tormod is recruited.
Nasir: Part 4, Final: Joins automatically if he survived part 3 of the final chapter.
Oliver: Part 4, Chapter 4: Speak to him with Rafiel.
Pelleas: Part 4, Chapter 2: Joins automatically if he survived 3-13 (second playthrough or higher)
Renning: Part 4, Final: View the info conversation before 4-F.
Stefan: Part 4, Chapter 3: Move Micaiah, Lethe or Mordecai onto the tile 11 up and 1 accross from the bottom right tile.
Tormod: Part 1, Chapter 7: Speak to him with Sothe.
Ulki: Part 3, Chapter 8: Speak to him with Ike or Reyson.
Vika: Part 1, Chapter 7: Joins automatically when Tormod is recruited.
Volke: Part 4, Chapter 5: Pay him 3000G with Bastian or Elincia.
Volug: Part 1, Chapter 5: View the info conversation before 1-5.
Chapter 1: Part 5: Master Crest
Go to the bottom right of the screen. There will be a healing jar. Go to the left platform next to the healing jar and wait on it. Immediately afterwards, a message will appear stating that you have found the Master Crest.
