How to Complete Three-Point Strategy

For this quest, there are three separate battles in three separate locations.

In Camoa, you must defeat the Night Dancer. There are other enemy units as well (Bishop, Cannoneer, Defender, Dragoon, Master Monk) but you can ignore them if you wish.

In Graszton, you must defeat Duke Snakeheart. There are other enemy units as well (Black Mage, Illusionist, Sage, Time Mage, White Mage), but you can ignore them if you wish.

In Moorabella, you must defeat Alys the Ensorceled. There are other enemy units as well (Assassin, Elementalist, Sniper, Spellblade, White Mage), but you can ignore them if you wish.