Originally Posted by
Levity
But you can switch back and forth freely. I'm rather an odd one for only being on my second adventure class after nearly 2 years playing (though technically it's my 5th). The penalty is "Adventure Rating" -- you have to kill monsters high enough level to match your rating, so if you are 100 in one class and start another one from the beginning, you have to go for critters around level 50, which can be impossible to kill. But that's my own poor mismanagement at work *laughs* I should have gone back and forth if I wanted to min-max.