Congratulations for single handily making every other Sonic animation look like a joke compared to yours. I loved it. Smooth, personable, clean, action, and intrigue.
I recently just made a Sonic animation as well, and though its not drawn (yes it's sprites) I still put in years worth of effort to try and give it a classic Sonic feel. You've gone a bit more modern and progressive but not "kiddy" which I thank you for.
Loved the homage to Sonic 2 Sky Zone. Awesome stuff my man, keep going and I'll eagerly await 2019 (when I'm in my 30's T_T)