I beat this game without using any microtransactions and it was my daily for just over a year. My 3DS Activity Log says my play time is 187:45 and I started up the game 1,113 times. This was because there was a timer for entering a level and you would have to use microtransactions to skip it. In the late game some timers went up to 20 hours. You couldn't actually select the level you wanted either, it would randomize between a group of levels. Despite this, you still had to play every level in order to beat the story mode.
Just days before I had finished the game, Nintendo released the game for retail so you could play it without having to dance around the microtransactions. I probably wouldn't have bought that version anyways but I sure felt played.