I absolutely love the environment!
Only thing I noticed that was a bit distracting was the feet sliding a bit.
One way to combat this is to use ghosting to see how far your character moves each frame.
You probably already have a movement speed set in your game. Find the amount of pixels your character moves each frame and input that number in the X offset in the ghosting view. Then adjust your animation length until it looks like there is no feet sliding.
For example here on Spineboy I've set the X offset to 61.8
Loading Image
Now in Unity I could set up the movement speed of my character to be 61.8 pixels per frame.
If my movement speed in Unity was already set to a different number, say for example 80 pixels per frame I would then set the offset to 80 and select all my keys in the dopesheet, then scale until the ghosting frames match up with an offset of 80.
