Ashanard - Successfully complete the game fifteen times to unlock Ashanard when playing the bonus trial maps.
Ashera Staff - In Chapter 22, Solo, there is a group of priests that are taken hostage and used as bodyguards. Instead of killing the priests, including the head priest, shove them out of the way. The ability Smite is useful in this battle. Mordecia the Tiger Laguz has this ability, and in the last battle if you raided all the rooms of their treasures, then you should also have another Smite ability. Use these to knock the priests out of the way and make sure not to stand next to the ones with light magic; they will either damage you or you will kill them. If you make it all the way through the level without killing any of the priests, the head priest will reward you with the Ashera Staff (Staff-S Wt-4 Range-total, restores all HP to all allied units, as well as restoring their condition to normal).
Astrid - In the mission where you are supposed to protect the Apostle's ship in Chapter 13, there is a Bow Knight named Astrid. Have Ike talk to her and she will join your team. She has the Paragon skill which makes her gain lots of experience points.
Bonus maps - Successfully complete the game, then load the "Epilogue" file to play any of the following bonus trial maps after they are unlocked. Your characters will be at the level they were at and have the weapons they had at the end of Story mode. The trial maps are unlocked by completing the indicated task:
Brom - In the "Prisoner Release" mission in Chapter 10, open Brom's cell door. Have Ike talk to him and he will join your team. He is in the same room as Kieran. He is average, but not that great towards the end.
Bryce - Successfully complete the game ten times to unlock Bryce when playing the bonus trial maps.
Calill - Read the conversation before Chapter 20.
Completing Chapter 1 - You must use the weapon triangle. Do not let Boyd and Titania fight swordsmen. Do not let Oscar fight axemen. Ike can fight anything. Visit the nearest house with Ike to get a steel sword. Have Titania kill the leader.
Completing Chapter 2 - Move Rhys to the map's edge. Move the others around him. Stay like this until Titania arrives. When she arrives, move around and take out bandits. If she is too hurt to fight, switch with Ike. Keep this up until they are all dead.
Completing Chapter 3 - Do not visit this time. Take out pirates with Shinon and Gatrie. Then, take Titania and Ike on the ship. When there are a few pirates remaining, talk to Marcia (or someone similarly named) with Ike. It will be useful later. Then, use Ike to take out the captain.
Completing Chapter 4 - Make a barrier around Rhys and Soren. Put Shinon and Gatrie in the front and Ike and Titania on the sides. Wait until they lessen their numbers, then charge at the rest.
Devdan - Devdan is a Halberdier who is indebted to Duke Tanas. In the mission where you are sent to investigate Tanas's in Chapter 16, make sure to bring Mist, Rolf, Soren, or Ilyana. Devdan will attack anybody except children. Have one of these four characters talk to him and he will join your team.
Ena - Ena will join your party if Dark Knight is not killed in Chapter 27.
Final battle - In the final battle, you have a choice of calling either Giffca: Lion Laguz level 20, Tibarn: Hawk Laguz level 18, or Naesala: Raven Laguz level 17. All of them have Laguz Bands, which are like Demi Bands but do not cut down your stats and can only be equipped by those three people. Also, whomever you select will also remain with you for the trial maps.
Fixed Growth mode - Successfully complete the game, then start a new game.
Gatrie - Gatrie leaves you around Chapter 8, but returns later in the mission where you must protect the Apostle's ship in Chapter 13. After getting Astrid, have her talk to Gatrie and he will join your team. You will now have your wall back.
Geoffrey - If Geoffrey survives in Chapter 24, he will join your party.
Get Shinon back - In Chapter 18, to get Shinon back, speak to him with Rolf then kill him with Ike. After the chapter is finished, Shinon will join you again.
Griel - Successfully complete the game twenty times without losing to anyone on the very difficult setting to unlock Griel, Ike's father.
Haar - In Chapter 23, speak to Haar with Jill.
Holy Knights Triangle attack - This attack is the same as the Three Brothers Triangle attack; you must have Elincia, Tanith, and Marcia all together. Place them in a triangle formation around an enemy and command one of the units to attack. Note: The three units must be able to use swords. This attack can only be performed near the end of the game. Check on "Info" at the base often.
Illustrations - Successfully complete the game to unlock the Fire Emblem: Path Of Radiance illustrations.
Ilyana - In Chapter 8: Despair & Hope, there is a female mage, nine spaces north and two spaces west, named Ilyana. Have Ike talk to her and she will join your team. She has Elithunder as her attack.
In-game reset - While playing the game, hold X + B + Start.
Jill - In Chapter 12, Jill joins you automatically on the way to Bengion. She is a Wyvern Rider, your first, or perhaps second, flying unit. She stays with you all the way until you invade Daein. If you want to keep her, make sure you do not use her in any battles in Daein.
Kieran - In the "Prisoner Release" mission in Chapter 10, have Oscar talk to Kieran and he will join your team. Kieran is an Axe Knight.
Largo - Read the conversation before Chapter 25 to get Largo.
Lethe - Have Lethe survive Chapter 9.
Lose Shinon and Gatrie - In Chapter 8: Despair & Hope, after Ike's father dies, Shinon and Gatrie will leave thinking that Ike is not a capable leader.
Makalov - In Chapter 14, after the Apostle gives your first mission, bring Marcia. In the top left of the screen is a Sword Knight named Makalov. He is Marcia's brother. Have Marcia talk to him and he will join your team.
Marcia - In Chapter 3, make sure Ike talks to the Pegasus Knight at the top left of the screen before she gets killed. Do not worry too much; she dodges a lot. She will mumble something about repaying a debt and flies off. If you do this, later in Chapter 9 she will return about two to four turns into the mission. Have Ike talk to her and she will join your team. She is not the greatest, but with a bit of work turns into a very reliable unit. Plus, she flies.
Mia - In Chapter 7, after a few turns, a charter named Mia will walk on screen from the East Exit. Have Ike talk to her and she will join your team. She has a sword.
Mordecai - Have Mordecai survive Chapter 9.
Mystery option - Successfully complete the game on the Normal or Hard difficulty setting, then go to the Extras menu. Go to the bonus maps and select the first map, and when asked "Is this correct?" select "No". Then, press B to leave the bonus maps screen. Go to "Illustrations" and there will be two Fire Emblem: Path Of Radiance options. However, you cannot select the second option. To get rid of the second option, exit the Illustrations screen, go to the Bonus Maps screen, leave the Bonus Maps screen, then go back to the Illustrations screen. The second option should now be gone. Note: This must be done before you add Fire Emblem and Fire Emblem: Sacred Stones to your game.
Nasir - Nasir will join your party if Dark Knight is not killed in Chapter 27.
Nephenee - In the "Prisoner Release" mission in Chapter 10, open Nephenee's cell door. Have Ike talk to her and she will join your team. Nephenee is a soldier and can become one of your better units.
Oliver - Successfully complete the game three times to unlock Oliver when playing the bonus trial maps.
Petrine - Successfully complete the game seven times to unlock Petrine when playing the bonus trial maps.
Reyson - Read the Conversation before Chapter 18, complete Chapter 17, then accept his assistance in Chapter 18.
Shihiram - Successfully complete the game five times to unlock Shihiram when playing the bonus trial maps.
Sothe - Read the conversation before Chapter 12.
Sound Room option - Successfully complete Story mode to unlock the "Sound Room" option.
Stat control - When you are in the base, you can save your progress then reward units enough experience to level up. If you are not satisfied with the stats they gain, reset the game and level them up again. You can repeat this as many times as your Bonus Exp allows. Make sure to save your game when you get stats that you want to keep. The process is somewhat time consuming, and you use a lot of Bonus Exp, but it is very useful in building up almost invincible units.
Stefan - In Chapter 15, move Lethe or Mordecai to the upper right part of the map.
Tauroneo - In Chapter 21, speak to Tauroneo with Ike, Soren, Mist, Sothe or Tormod.
Theater option - Successfully complete Story mode to unlock the "Theater" option.
Triangle attack - This is a special attack that can be done with Boyd, Rolf, and Oscar. They all must be able to use a bow, meaning Boyd needs to be a warrior and Oscar must be given the ability to use bows. Form a triangle around the target and choose one of the brothers to do the attack. Note: You must see two conversations between the three at your base. Make sure to check the "Info" option frequently.
View game script - While a character is talking, press Z to see all previously viewed dialogue for that chapter.
Volke - Hire Volke at the start of Chapter 10.
Zihawk - In Chapter 11, speak to Zihawk with Lethe or Mordecai and he will join your team.