The reason for only having four character classes and many professions is that it allows you to use a single order for all the characters of a certain class. This makes changing tactics and trade easier and faster.
Fighter - Warriors, Gladiators, Archers, Footmen, Knights and Berserkers all come under this title for all are skilled in combat. The handling of weapons and armour comes with ease to members of this profession. The main attribute for the fighter is his toughness but awareness is useful when missile weapons are used. There is never a shortage of work for a strong sword arm.
Priest - Clerics, Druids, Paladins, Monks, and Mystics all come under this title for they are the servants of the Gods. For services they carry out in the name of the Gods, they are blessed with the ability to perform miracles. The nature of the miracles will be determined by which God, or Gods that the priest serves. Most priests are revered by townsfolk.
Thief - Rogue, Pickpocket, Assassin, Scout; the thief title covers all of these. Awareness is the crucial attribute for characters who follow this profession. As thieves are not normally keen on a fair fight, they tend to be skilled with missile weapons so as to avoid direct combat. Crime is big business.
Mage - Wizard, Warrior Mage, Illusionist, Elementalist; call them what you will for these are the people skilled in the ancient Astoff arts of magic. Most beginning mages will know only a few of the simpler spells. It is as the game progresses that they can learn many more through research, experiment and experience. Due to the intensity of their studies, mages find weapons difficult to master though they are not prevented from using any sort of arms or armour.