One thing that annoyed me about Kirby Mass Attack...

For those who've played Kirby Mass Attack, was anyone else caught off guard by the fact that you have to collect all rainbow medals in order to access the final world?

I don't like how the game never telegraphed this. Not to mention levels are pretty long too, so its kind of annoying having to go back. It's like if Kirby Planet Robot never mentioned collecting code cubes. And then suddenly at the end of the game, it said you needed X amount of code cubes in order to reach the last boss or something.