Fire Emblem: Shadow Dragon Hints, Tips, Tricks, Secrets, & Glitches

Chapter Two Characters

Julian: Is playable right from the start of the chapter.
Lena: Lena is also playable right from the start.
Navarre: Talk to Navarre using Caeda, he will join your team.

Chapter One Characters

Norne: If you finished the prologue with four units or less, you will start Chapter One with Norne in your group.
Draug: You start with Draug on your team and he will be the only Armored Knight on your team for a long time.
Wrys - If you visit the village with Marth, Wrys will join your team.

The Three Gharnefs Chp. 23

For This chapter there are three Gharnefs so to make it easier to find which one is the real one you should use the geosphere to deal even damage to everyone. However it won't do damage to the real Gharnef so you will know which one is the real one by there being no damage done to him.

Recruiting Units

Alan (Paladin) Chapter 16 Visit the village to the left with Marth
Astria (Hero) Chapter 13 Enemy, talk with Midia
Athena (Myrmidon) Chapter 6x Visit the village with Marth
Banutu (Mamkute) Chapter 7 Visit the village with Marth
Beck (Shooter) Chapter 13 Visit the village with Marth
Chainy (Commando) Chapter 16 Enemy, talk with Marth
Chiki (Mamkute) Chapter 19 Enemy, talk with Banutu
Daros (Pirate) Chapter 2 Enemy, talk with Marth
Ellis (Cleric) Chapter 24 Automatically from the start
Est (Pegasus Knight) Chapter 18 Enemy, talk with Marth
Etzel (Sorcerer) Chapter 17x Clear the chapter without killing him
Gato (Sage) Final Chapter Automatically from the start (Only if you didn't go to Chapter 24x)
George (Sniper) Chapter 9 Visit the village with Marth
Gordon (Archer) Last part of tutorial Enemy, talk with Marth (Automatically from the start if you're playing hard mode)
Horus (General) Chapter 12x Clear the chapter without killing him
Hymir (Warrior) Chapter 20x Talk with Marth and complete the chapter
Jake (Shooter) Chapter 11 Enemy, talk with Sheeda, must have visited village where Anna is (In same Chapter)
Kashim (Hunter) Chapter 2 Enemy, talk with Sheeda Katua (Pegasus Knight) Chapter 14 Enemy, talk with Marth
Lawrence (General) Chapter 20 Enemy, talk with Marth or Sheeda
Linda (Mage) Chapter 11 Visit the village with Marth
Machis (Cavalier) Chapter 4 Enemy, talk with Rena
Maria (Cleric) Chapter 10 Enemy, talk with Marth
Marich (Mage) Chapter 4 Visit the northern village with Marth
Minerva (Dragon Knight) Chaper 10 Enemy, talk with Marth, and must have recruited Maria
Nagi (Mamkute) Chapter 24x Clear the chapter
Navarre (Myrmidon) Chapter 3 Enemy, talk with Sheed
Norne Finish Prologue IV with 4 or less characters in the party.
Norne (Archer) Finish Prologue IV with 4 or less characters in the party.
Paola (Pegasus Knight) Chapter 14 Enemy, talk with Marth
Ricardo (Thief) Chapter 6 Enemy, talk with Marth or Julian
Riff (Priest) Chapter 1 Visit the western village with Marth
Roger (Knight) Chapter 8 Enemy, talk with Sheeda
Samson (Hero) Chapter 16 Visit the village to the right with Marth (Can only recruit either Samson or Alan not both)
Wendel (Sage) Chapter 5 Enemy, talk with Marth or Marich.

Tips For General Gameplay

Don't forget about side quest chapters.
When you finish chapters 6, 12, 17, 20 and 24, you will automatically unlock optional side quest chapters if you have fulfilled certain conditions. To unlock the first of these after chapter 6, the number of total units in your army must be 15 or less including Marth at the time you complete the chapter.
To recruit Navarre to your army.
In Chapter 3, send Caeda to a space adjacent to Navarre’s and initiate a conversation with him using the special Talk command that appears. Remember, it has to be Caeda. Approaching him with any other character won't do the trick.
Be smart about how you use arenas to maximize their usefulness:
When you enter an arena you can see how much gold you need to wager to cover the bet on a fight. The bet changes based on the strength of the fighter your unit will face in battle. The lower the bet, the better the chance that you will be able to easily dispatch of your opponent, earning you money and experience. If you’re worried that a proposed fight will be too tough for your unit, simply back out of the arena and reenter. Repeat this process until you come across a fight with a bet low enough for your tastes.
Make sure to purchase rare weapons in Chapter 8.
In chapter 8, there are multiple armories and item vendor shops on the map. Here you can find rare and powerful weapons such as Silver Swords and Wing Spears for sale. These weapons will make encounters in the coming chapters much easier, so be sure to make a few purchases before you seize the castle gate and end chapter eight!
Don't forget to talk with villagers from time to time.
You never know what you might gain from talking with the people of the land. For example, in Chapter 11, you can recruit a powerful ballistician by the name of Jake to your team, but only if you talk with his sweetheart, Anna, first. Talk with Anna by visiting the house east of the lake in the village on this map. Only once you've done this can you Talk to Jake using Caeda and recruit him to your cause.

Gaiden Chapters

Chapter 12x Have fewer than 15 characters by the end of Chapter 12
Chapter 17x Have fewer than 15 characters by the end of Chapter 17
Chapter 20x Have fewer than 15 characters by the end of Chapter 20
Chapter 24x Chiki dead and no Falchion
Chapter 6x Have fewer than 15 characters by the end of Chapter 6.