This method of progression allows you to test and improve certain mechanics of the game. (thekoalition.com)
Though I'm not ready to talk in - depth about the game, I will say certain mechanics are different from how they'd be handled in similar action platformers. (nintendotoday.com)
Why oh why have separate campaigns that only teach you about certain mechanics when you actually need to understand all of the gameplay elements to complete them? (wolfsgamingblog.com)