Give it another try. You'll dig the upcoming stuff.
Ok I gave it another shot and did some serious medal grinding before I did any levels. I had ~65 medals by the time I finished the 4th boss and I should have about 85 by the time I finish the 5th boss next time I play which would let me access medal 6 stages. I'm just worried about getting 120 medals for the last ones. There's only like 1 or 2 towns left now to scourge for medals and I'm seriously terrible at getting medals during the daytime Sonic stages. I did Arid Sand Day and I got 1 sun medal, 1 moon medal total

The Sonic stages are too fast for me, I just hold forward the whole time and keep tapping X. I have no idea what is happening in them. I get most of the medals in the Werehog stages though.
I don't really know why I'm playing it outside the graphics though ^^; I've skipped every cutscene in the game so far so I have no idea what the story is. I haven't talked to any NPCs in the town except when I had to at the start to advance. I haven't done any of their missions. I haven't bought anything at the shops. I'm just doing levels and I sort of enjoy them at times and then sort of don't at times when they are annoying. I guess I just feel like I've put a bunch of time in so I might as well finish it instead of having it sit forever unfinished on the shelf. Last Sonic game I actually finished was Sonic Adventure 1.

Also the framerate in this game is so fucking terrible outside of the Sonic Day stages. It's like they didn't even care to optimize anything. Empire City runs at like FIVE FRAMES PER SECOND and it's not even a great looking area. Shambar runs soooo choppy too. Ughhh, the engine looks awesome at times, but then chug chug chug.