Complete the indicated task to unlock the corresponding character.

Audrey (Lancer): Earn ten medals.
Emile (Sniper): Unlock Oscar's hidden potential, then allow him to die in battle.
Knute (Engineer): Enter the Command Room with 1,000,000 DCT.
Musaad (Scout): Complete the game.
Lynn: Have Karl (engineer) in your party and have him unlock his potential during a battle.