'Fun' fact: Due to the impossible to score on level 'Unbelievable Bug', only Shiro has ever scored on every level when the game had a substantial number and had very difficult levels. Kiethy has beaten them all, but it is impossible to score on that level in its current state. Pof could not have either.
Woah. I beat one of them at least. (Also, QR24, Cliff Adventure and The Power of Skill are completely insane - at least my perseverance got me through QR24)