A couple of days ago, I finished KQ4 (yay!
But ... every time I had to go to Lolotte's castle, I had to go up a really steep cliff. And at least three or four times, while negotiating this cliff ... Rosella fell off. (Boo!)
I don't know why it's supposed to be so difficult to climb up and down things in this game. Cliffs, stairs ... miss the exact spot just once, and you plummet to your death. (Boo!)
It is just one of many frustrations in this game ... including the notorious "whale-tongue climb" scene.