Always Look For New Recruits
Finding new recruits for your army is probably the most important aspect of Fire Emblem Echoes: Shadows of Valentia. Expanding your party is only going to help you, and you can bring nearly 18 units with you into battle at one time. This is especially important, considering Echoes loves to throw literal hordes of enemies at you later in the game, easily overwhelming you if you only have a few units to your name.
Echoes is fairly liberal with giving you opportunities to find new characters, sprinkling them throughout each chapter. Unlike previous games, however, you won’t be talking to them in battle to recruit. You’ll need to explore towns, castles, and other locations, talking to characters along the way. Oftentimes battles will have you fulfill special objectives, or fight alongside allied units marked in green. Whenever you have AI allies joining the fray, make sure they survive the battle, then head to the nearest village or location and look for them. It’s easy to accidentally miss recruitable characters, so always keep an eye out and don’t be afraid to backtrack.