Very cool presentation and dedication to reproducing that genesis feel! Felt like you covered all the bases and have a good core engine here that you can work with. The only unfortunate thing for me is that, it might almost be too good of a Sonic clone in that it has all of the things that should probably be improved upon nowadays (slippery movement, camera/player positioned to not allow you to see obstacles in time, etc). If you agree, I'd love to see this improved upon and given its own unique voice!