This is really Silver The Hedgehog's game... and it sucked.
Sonic is just on the cover for marketing/selling purposes. The game should've been titled Silver The Hedgehog. Some of you reading this probably didn't know that there was a third hedgehog named Silver.
This game has unnecessary cutscenes, unnecessary loading screens, pointless dialogue, & logic gaps. This game has in your face glitches and crappy camera angles. This was a game with such a lack of attention to detail. This game got released too soon.
The dialogue between Sonic & Elise feels awkward. Sega nerfed Shadow's speed to highlight the fact that Shadow can use vehicles that can shoot projectiles while playing as him. Where does Shadow get a machine glider that can shoot missiles? Sega wanted you to feel like you're playing Shadow The Hedgehog (2005). Silver The Hedgehog sounds like an annoying 10 year old brat.
Why is Blaze The Cat faster than Sonic & Shadow in this game?
There are rumors that sega is coming out with a remake of Sonic 06... and I'm not looking forward to it. Sega should work on a remake of Shadow The Hedgehog.
Of course, Shadow had the best story in Sonic 06. Mephiles The Dark is great villain. He's creepy & feels pure evil.