Barbarian: Close quarter combat, masters in weapons.
Paladin: A holy fighter.
Warrior: Kind of like a knight.
Necromaner: Someone who summons the dead to aid him.
Druid: Shapeshifts and controls the elements of nature.
Assassin: Self-explanitory.
Archer: Masters in bows.
Amazon: Master in both bows and javalines.
Caster: Casts magic spells.