Does this really need a review? It's GMod bro

While the difficulty may be a turn off to many fans and other players, the challenge was worth it in my opinion for a complete rework of the game's third act that works in the story and gameplay's favor.

A damn good 3D Sonic game that tells one of the strongest stories in the franchise. If future Sonic games are built off what is set here, then 3D Sonic is in for a good time.