Hello, I solved the issues with C button. They'll be addressed in 1.04. Thank you!
Thanks to you!BTW: sometimes playing as Amy she has two tails O-oLook:
It's a variable related to the tails that sometimes doesn't want to stay clean. Other people reported it happened on Shadow and others as well. I fixed it yesterday in my build and it will be coming along with the 1.04. Thank you for reporting!