Hello! Great effort, but I of course have bugs to report :P
* The prefab is rotated 180 degrees, so the character is on his head when put into the scene.
* There's a Z-sort bug where his hat is placed behind his head.
* His feet have changed places! It seems like the images linked to the bones have simply swapped places.
I followed Edgar's video tutorial, and Spriter2Unity didn't report any metafiles missing. Tried redoing all the steps, but the same thing happened.
I can send you the Spriter-project if that would be helpful for debugging purposes :)