Fire Emblem: Path of Radiance cheats and cheat codes for Gamecube

Unlock sound room 
Finish the game once

In-game reset
Hold X + B + Start during game play.

View previously viewed chapter dialogue:
Hit Z button while someone is talking

Unlock hard mode option:
Finish the game once, then begin a new game.

Unlock battle maps hidden characters:

Task - Secret character - Class
Finish the game once - Narshen the boss from stage 16 - Dragon Master
Finish the game twice - Gale the Dragon Master from stage 21 - Dragon Master
Finish the game three times - Hector from Fire Emblem 7 - General
Finish the game four times - Brenya the boss from stage 23 - General
Finish the game five times - Eliwood from Fire Emlbem 7 - Paldin
Finish the game six times - Murdock the boss from stage 21 - Sage
Finish the game seven times - Zephyr the boss from stage 22 - King
Finish the game nine times - Guinivere - Sage

Unlock Trial Map 4 - Finish the game in hard mode
Unlock Trial Map 5 - Finish the game in hard mode with best ending

Play on Bonus maps
Complete the following objectives to unlock trial maps:

Strange Turn map: Finish Story mode on the Difficult mode.

Lonely Isle map: Finish Story mode inn the Normal or Difficult mode.

Hillside Battle map: Finish Story mode on any difficulty level.

Escape map: Connect to a GBA with Fire Emblem by using a link cable.

Trapped map: Connect to a GBA with Fire Emblem: The Sacred Stones 
by using a link cable.

Desperation map: Connect to a GBA with Fire Emblem or Fire Emblem: The 
Sacred Stones by using a link cable.

After unlocked the desired trial maps, load the "Epilogue" file to 
play on it. Your characters will keep the weapons from the completed 
Story mode. 


Unlock Ashanard on bonus trial maps
Finish the game 15 times

Unlock Astrid
Have Ike speak with the Astrid the Bow Knight in Chapter 13.
Astrid will join your team. 

Unlock Bryce on bonus trial maps
Finish the game 10 times

Unlock Calill
Read the dialogue before Chapter 20.

Unlock Ena
Don't kill the Dark Knight in Chapter 27. Ena will join your team.

Unlock Nasir
Don't kill the Dark Knight in Chapter 27. Nasir will join your team.

Unlock Geoffrey
If Geoffrey survives in Chapter 24, he will join your team.

Unlock Griel (Ike's father)
Finish the game 20 times without losing to anyone in very hard mode

Unlock Haar
Talk to Haar with Jill in Chapter 23.

Unlock Jill
Jill joins your team automatically on the way to Bengion in Chapter 12.

Unlock Largo
Read the dialogue before Chapter 25.

Unlock Lethe
Have Lethe survive Chapter 9.

Unlock Mordecai
Have Mordecai survive Chapter 9.

Unlock Tauroneo
Talk to Tauroneo with Ike, Soren, Mist, Sothe or Tormod in Chapter 21.

Unlock Volke
When you begint Chapter 10, you can hire Volke.

Unlock Zihawk
Talk to Zihawk with Lethe or Mordecai in Chapter 11

Unlock Sothe
Read the dialogue before Chapter 12.

Unlock Shihiram on bonus trial maps:
Finish the game five times

Unlock Reyson
Read the dialogue before Chapter 18, finish Chapter 17, then accept Reyson 
assistance in Chapter 18.

Unlock Oliver on bonus trial maps
Finish the game three times

Unlock Petrine on bonus trial maps
Finish the game seven times