Gameplay wise, this game is extremely fun, the Wisps are really fun to play with and add a lot to the gameplay, and the Nega Wisp boss fight is really epic, easy, but epic.
However, this game does suffer from having very weak writing, when a joke lands, they ruin it by explaining the joke or dragging it on for too long, Sonic is extremely annoying in this game, this is the game that made me hate Roger Craig Smith's Sonic, he has improved a bit though if Rise of the Wisps is anything to go off of, hopefully he'll be better in Frontiers.
But yeah, this is a fun game with a very lackluster story.