[BlKnight]

Special classes, obviously a bit more advanced, or at least so specialized taht it takes an expert to properly use. When you are on the select class list you don't see any hidden classes unless you've unlocked them. To unlock a class you'd need to find a book about that class, In the book it lists a bunch of itmes (some common some rare) you have to retrieve. Once you ahve all the items you do a quest (not neccassarily a special quest just one of the existing ones over again.