Audio was great! Loved it, got me in the swinging mood! I had fun crushing those darn robots, but I wish there was more enemies of different kinds? Also rolling was a bit too hectic to use, I prefered just walking around, most of the time it was the most effective method.
The rings effect did not really change my playstyle all that much, so I would suggest maybe making them do crazier things and drop less often?
I had fun! Great job