To start, in 6mm you need to choose a team; I completed the game as a paladin, 2 marksmen, and a cleric.
There are 6 classes:

Knight-Rider-Champion
Paladin-Crusader-Hero
Marksman-Mage/Warrior-Battle Mage
Cleric-Priest-High Priest
Sorcerer-Wizard-Archmage
Druid-High Druid-Grand Druid.

I might have written them incorrectly, the localization teams did their best=)))
The next class level increases health/mana and is also needed for certain things, for example: swordmaster (requires Rider rank).
In this version, the problem with money is acutely felt.
P.S.
Anyone can become a master of any skill (with the exception that sorcerers cannot wear plate armor, and knights do not possess magic).

You start in New Sorpigal—there are various herbs lying around, collect some of them; tip 1: orange potion+purple+red (temporary +20 to level). :D

Sorry, mistake!!! +20 to level is orange+yellow+purple :D