Beat it, only took me 4 hours and 20 minutes to beat... Should have had some extra stuff.
My opinion of the game has not changed, I do think the grand majority of the game is great outside of Terminal Velocity and will be giving the game a positive review, but... I really do not want to play the game ever again. I am not sure what replay value people were talking about, just because the red rings are hidden around the levels does not really make me want to play them again.
I'm currently stuck on terminal velocity. I really hate that quick step isn't on the shoulder buttons like in Sonic Unleashed.
Save the boost until the section where the giant robot is chasing you (I am not sure how to dodge it, so just keep boosting). There is a scene where you have to hop - Not jump over little fences and if you miss any you will hit them all and be hit by the lazers too (BEST 3D SONIC, THOUGH). You can quick step into the Motobugs to destroy them too, so remember that.
It is easy once you have that down, but it is never fun. The second act you do not even need to move in, just keep jumping when you see a hole. Simple.
Be sure to use the normal Wiimote for this scene too. It is easier to quick step.