Complete the game and then load the 'Epilogue' file to play any of the following Bonus Trial maps after they have been unlocked. Your characters will have the level and weapons they had at the end of Story mode. Unlock the Trial maps by completing the corresponding task:

Map 1 - Hillside Battle:
On any difficulty setting complete Story mode

Map 2 - Lonely Isle:
On Normal or Difficult settings complete Story mode

Map 3 - Strange Turn:
On Difficult setting complete Story mode

Map 4 - Desperation:
Use a Link cable to connect to a Game Boy Advance with Fire Emblem or Fire Emblem: The Sacred Stones.

Map 5 - Escape:
Use a Link cable to connect to a Game Boy Advance with Fire Emblem.

Map 6 - Trapped:
Use a link cable to connect to a Game Boy Advance with Fire Emblem: The Sacred Stones.

Unlock Characters

Oliver:
Beat the game 3 times

Shihiram:
Beat the game 5 times

Petrine:
Beat the game 7 times

Bryce:
Beat the game 10 times

Ashanard:
Beat the game 15 times

Mia - Chapter 7:
Speak to her with Ike

Ilyana - Chapter 8:
Speak to her with Ike

Marcia - Chapter 9:
Speak to her with Ike

Lethe and Mordecai - Chapter 10:
If they survive in Chapter 9 they will join

Volke - Chapter 10:
If you hire him at the start of Chapter 10 he will join

Nephenee and Brom - Chapter 11:
Free them and speak to them with Ike in Chapter 10

Kieran - Chapter 11:
Free him and speak to him with Oscar in Chapter 10

Zihawk - Chapter 11:
Speak to him with Lethe or Mordecai

Sothe - Chapter 12:
Read the conversation before the Chapter

Jill - Chapter 12:
Let her speak to Ike

Astrid - Chapter 13:
Speak to her with Ike

Gatrie - Chapter 13:
Speak to him with Astrid

Makalov - Chapter 14:
Speak to him with Marcia

Stefan - Chapter 15:
Move Mordecai or Lethe to the upper right area on the map

Tormod - Chapter 16:
Finish Chapter 15

Muarim - Chapter 16:
Finish Chapter 15

Devdon - Chapter 16:
Speak with Soren

Reyson - Chapter 18:
Read the Conversation before Chapter 18. Then finish Chapter 17 and accept his help in Chapter 18

Calill - Chapter 20:
Read the Conversation before Chapter 20

Tauroneo - Chapter 21:
Speak with Ike, Soren, Mist, Sothe or Tormod

Haar - Chapter 23:
Speak with Jill

Largo - Chapter 25:
Read the conversation before Chapter 25

Geoffrey - Chapter 25:
Must survive in chapter 24

Ena - Chapter 28:
Joins if Dark Knight is not killed in Chapter 27

Nasir - Chapter 28:
Joins if Dark Knight is not killed in Chapter 27


Trial Maps

Map 1 - Hillside Battle:
Clear 'Story' mode on any difficulty setting

Map 2 - Lonely Isle:
Clear 'Story' mode on 'Normal' or 'Difficult' setting

Map 3 - Strange Turn:
Clear 'Story' mode on 'Difficult' setting

Map 4 - Desperation:
Connect GBA with an English FE game inserted

Map 5 - Escape:
Connect GBA with the American Fire Emblem game inserted

Map 6 - Trapped:
Connect GBA with Sacred Stones inserted


Unlocking Illustrations

Fire Emblem Illustrations:
Connect GBA with the Fire Emblem game pack in it

Fire Emblems: The Sacred Stones Illustrations:
Connect GBA with The Sacred Stones game pack

Fire Emblem: Path of Radiance Illustrations:
Complete the game


Sound Room and Theater

Sound Room:
Complete 'Story' mode

Theater:
Complete 'Story' mode