TL;DR: Play the Unleashed Project.

This review hurts.

Because, I really want to love this game-- but really, I love only 1/4th of it. The day stages, the love they put into the map by researching every country-- the soundtrack. It's an absolutely gorgeous game graphically wise and gameplay wise. This is exactly what a modern Sonic game should be. You can see that someone actually tried, and that someone actually loved Sonic.

And then, terrible design choices happened.

The medal collection. The long and repetitve Werehog stages. The awful boss fights (excluding Dark Gaia. Somehow the Werehog boss fights were better boss fights then the Hedgehog fights).

I've never seen a game constantly shoot itself in the foot. It's one of the better modern Sonic games, for sure-- but a mid game overall.