[At least the technology didn't surprise him anymore, per se. But Albel still isn't any kind of wizard at it, and so he just stashes away this information for future reference. There is a way to turn up the difficulty, and there is a way to change what monsters appear. How, exactly, is the last piece of the puzzle.]

I don't see why you wouldn't have it on the highest level in the first place. What point is there if there isn't any challenge?