For me this is the best skills for each classes: Crusader - Illusion Slash (Use energy of sword to damage enemy at a distance), Stealth (Make character invisible to other unit) Champion - Primal Rage (Close attack on target), Blood Bull (Equip totem to increase max HP and defense of character) Seal Master - Seal of Elder (Prevent enemy from using skills), Shadow Insignia (Prevent enemy from using normal attack) Cleric - Angelic Shield (Increase defense of character), Energy Shield (Activate to replace HP loss with SP) Sharpshooter - Headshot (Ignore target's defense and deal maximum damage), Enfeeble (Decrease attack and prevent enemy from using skill) Voyager - Conch Ray (Use Strike Coral to damage enemies in a straight line), Lightning Curtain (Use Thunder Coral to create a thunderstorm that damage enemies in an area)