It's very enjoyable. I haven't got too far yet, just finished doing Neins shooting gallery thing. It's probably one of the best platformers (and game) I've ever played, it's got a very charming style to it. It all just fits perfectly you know?
I really think it is. It's one of my favourite games. It's original, unique and everyones giving a part to play in the story, even the small characters. There is a slight control issue and the difficulty curve really goes up in the last half an hour but thats excusable since the game excels at story telling and has a lot of charm.