Mission 1-1: First Encounter: This is your very first battle. You'll control Alfonse, Sharena, and a tutorial unit. Focus on moving your units to attack enemies with a weapon triangle advantage. Alfonse (Red Sword) is strong against Green units, Sharena (Blue Lance) against Red units. The game will guide you through the basic controls. Rewards: 1 Orb, 100 Hero Feathers.
Mission 1-2: Princess of Embla: You'll face Veronica for the first time. She's a powerful Red Tome user. Use Sharena to engage her if possible, or gang up with your other units. Keep your units healed if you have a healer. Rewards: 1 Orb, 100 Hero Feathers.
Mission 1-3: The Summoner: This mission introduces the Summoner (you!) as a unit. While you don't directly control the Summoner in combat, their presence is important for the story. Focus on using your heroes' strengths. Rewards: 1 Orb, 100 Hero Feathers.