The beginning is much stronger than the end. Near the end, the references start to fizzle out and the platforming becomes a lot of finding ways to fly through the air. That said, the platforming and references, at least up until Sand Mountain, are up there with some of the best licensed games ever. I actually can't think of another licensed game with better references except maybe Simpson's Hit & Run. The bosses are great especially the final boss. Really, really solid platformer that fits with the whole collectathon revival that's having its moment right now.