Routes and optional chapters of Sword of Seals

There are many sidequest or Optional Chapters (8x for example) in the game... and if you don't go to every one of them, you can't access to the true ending, neither see the last chapters in the game.

 
 
 
 
 
 
 
Chapter 8x: The Blazing Sword -
Keep Lilina alive.
 
Now you can "choose" between two different routes, doesn't matter which one, only one character and the maps vary.
DON'T visit the right village
Visit the right house.
   
  
 
Chapter 12x: The Axe of Thunder -
Complete the Chapter in 20 turns or less. If you did go to the B route, keep Elphin alive too.
 
 
Chapter 14x: The Infernal Element -
Complete the Chapter in 25 turns or less,
and keep Sophia alive.
 
 
Chapter 16x: The Pinnacle of Light -
Don't kill Douglas
 
 
Now you can "choose" between two different routes, doesn't matter which one, only one character and the maps vary.
Your Nomads, Sue and Sin, must have more experience than your Pegasus Knights. Your Pegasus Knights, Thany and Tate, must have more experience than your Nomads.
   
Note: On Internet, many call one the route A the B route, but many as the A too... I think is better to call them by the names, or by Sacae / Illia...
  
  
  
  
Chapter 20Ax: The Bow of the Winds -
Complete the Chapter in 25 turns or less,
recruit Dayan and Sue and Sin, and keep them alive.
Chapter 20Bx: The Spear of Ice -
Complete the Chapter in 25 turns or less,
recruit Yuno and Zealot, and keep them alive.
 
Chapter 21x: The Silencing Darkness -
Complete the Chapter in 30 turns or less,
recruit Zeiss and Milady, and keep them alive.
 
If you want to go beyond here, you must have every legendary weapon, and you must complete every optional chapter (8x, 20Ax or 20Bx, etc.). Remmember that in every one of them you get a legendary weapon, because this, and how you can take only one route, Yodel gives you the other weapon in Chapter 21 (Holy Maiden ISN'T one). Otherwise, this is the final chapter. Keeping Fa alive isn't a requeriment!
 
 
Here you have two endings: the good one is if you kill the final boss with Roy and the Sword of seals, and the bad is if you use any other character to do it.

Go to FE: Sword of the Seals section