Now that I've completed the game I've got to say, this is a great game. There are certainly some difficulty problems, but the feeling of pure joy you get from finishing that one difficult level is addicting. The 100% run is not for the faint of heart, elderly or pregnant women, but if you aren't one of those I 100% recommend completing the game. In fact, even if you are one, why not risk it? It's worth it. :)