What do you mean? You need to level up WIS or COM stat to increase your damage with magic or melee too because without it you’ll only hit the naked guys without a lot of DEF stat and SUR stat and it's same as level up your CON stat if you play as Nympho Lona because without big CON stat you will not be able to deal a very large amount of yellow damage but only like 30... or 40... and just lose a lot of stamina.
Yes, it is easier to do this for some classes and more difficult for others but you still need to gain exp for some builds.
Did you ever create a SDQ class with a whip? Thief/Treasure Hunter? Assasin? Berserk? Ranger? Hunter? Battle Mage? Knight? Ninja? or do you just play with a halberd all the time? Eh?=)