Couldn't record my playthrough (I only have two hands, and it'd take two to hold the controller and two to hold my phone for a total of four hands required, alas), but it was pretty fun. Controls exactly as you'd expect. Took the upper routes as much as possible, though since I don't have video footage to show you of said areas, I don't think I'd be able to adequately explain what was up there.
I did record some other people playing it, though. Will probably post that when I get the chance - but since it's randos playing and not necessarily longtime Sonic fans, it won't be much you haven't already seen. (Also, the event had rules and stipulations about how much footage could be posted - no more than five minutes, in Mania's case - though I think I got less than that in the end, anyway.)
Oh, I do have one thing to complain about, though... if you were looking up, and then immediately try to Spin Dash, you'll jump instead, because the "no longer looking up" animation is in the process of playing and seems to have higher priority than starting the ducking animation. Was able to reproduce that repeatedly. Tried the same in Sonic 2 when I got home, but no, you'd Spin Dash as you'd expect to.