The selection is easy to miss and disabled in Explorer difficulty...

Currently when playing on Explorer difficulty, you are unable to multiclass aka select a different class when leveling up. Presumably to prevent absolute beginners to accidently mess up their character build. But what if you have an idea what you want to do, and still want to enjoy Explorer difficulty?

Since you can change the difficulty at any time, switch for the level up to Balanced difficulty, and then switch back to Explorer difficulty.

ㅤ
Level up -> and now back to Explorer



So simple! ...