Fire Emblem: The Sacred Stones/Gameplay

In any cases, if there is an important unit related to victory condition, it will have a shield mark.

Victory conditions
These depends on the specific scenario.
 * 1) If the enemy boss is defeated.
 * 2) If your lord seizes a specific location.
 * 3) If each and all enemy units are defeated.
 * 4) If a certain character is alive for a certain number of turns.

Losing condition

 * 1) If your lord's HP falls to zero.
 * 2) If a certain character's HP falls to zero.