Note the minimum wager for a fight when you first enter an arena. A lower wage indicated an easier opponent. Exit out of the arena and reenter until you are matched with an opponent that you feel you can defeat.
You can recruit Jake, a powerful ballistician, by talking with Anna first. You can find her at the house east of the lake in the village on the map. Then, talk to Jake with Caeda and recruit him.
Get as many bows as possible and give them to Gordin in the "Marth Embarks" chapter. Kill all enemies on the map except for the Boss. Place Gordin in a space where he can attack the Boss without getting hit back. Keep shooting him for easy experience. Buy more bows if needed.
Send Caeda to a space adjacent to Navarre. Use the special "Talk" command that appears to speak with him.
There are multiple armories and item vendor shops on the map. They have rare weapons such as Silver Swords and Wing Spears for sale. These weapons will make encounters in upcoming chapters much easier.
Secret shops can be located at the following locations, with the listed items for sale. Note: Each item can only be purchased three times.
Complete the game.
Successfully complete the game.
Complete the indicated task to unlock the corresponding unit.