While the base game is challenging but fair, the amount of imperfections and expecting RNG to just work out in the Special world is just absolutely rotten foods level of bad. There are points in the game where a Wonder Flower is necessary to progress and it's pure luck as to whether or not you get it. I'm looking at you, Special Level from W4. It is completely random whether or not you'll be able to play the actual Level or not depending on if the Wonder Flower decided to work.