Here's a little something I made a few months ago which I haven't been able to work on lately due to school and no inspiration.
A list of actions you can perform:
Walk - Left/Right
Jump - B
Double Jump - B after having already jumped once
Punch - Y
Punch Up - Up + Y
Air Punch Up - Hold Up after first jump then press Y
Kick - X
Kick Up - Up + X
Kick Down - Down + X
Air Kick - Hold Left/Right in air then press X