More interesting than anything but I found that it's possible to softlock the game by backtracking into a locked door. This prevents movement and Klonoa will be stuck even after resting the game/room or dying and can only be fixed by exiting the level. I've only found spots that work in Visions 3-1 and 3-2 as they have locks right on the edge of the screen that loop back around to the main pathway.