It's not as bad as some people make it look, but I wouldn't call it great either. Often the levels are too big and confusing and you may waste a lot of time just figuring out what to do and then the things you are meant to do aren't always fun. But when it is fun, its pretty damn good, the humor and characters are great, there are many fun mini-games and places to explore and I'd say p much everything after Grunty Industries is solid.

Also unlike many other sequels at the time, it doesn't feel rushed, the content, good or bad, is unique for each world, so props for that too.