It IS possible to kill these level 18 Goblins when your hero is level 14! I do it in my first playthrough. I was level 13 and killed one by one the level 18 Goblins, but, I play on the most easy difficulty!! Maybe that's why I can handle these Goblins from 5 levels higher
But on the other hand, I find it better now to go first to the Maxos Temple and to Sentinel Island first and than my Battle Tower. After that, I can do teh whole Orobas Fjords in Dragon + human form
For me it's more fun to kill enemies from the same or 1 or 3 levels higher all the time (not higher),
because by enemies they're more levels higher (than I'm), I must use to much potions and I find that a little boring!
