Hi there, thanks for sharing! I have to say first that the animation for the sword swing is awesome! In fact, I really like all of the art that you used in your jam, great job! I think the music was nice and helped to create atmosphere, but I had to turn it down on my end since it was a little loud.
My only suggestion/criticism for the game is maybe to have some sort of info about the controls/rules? I was really stuck at first, as I tried simply moving into enemies thinking it would hurt them. I tried lots of buttons before finding the z & x, though in hindsight, those are pretty standard. Another concept I didn't (and to a certain extent, may still not) understand is when the people scream and the level resets. Is this when they touch the pink tiles, what are they? I think some text that appears on the first level to explain controls and on the level that had the pink tiles may be helpful to explain how to play.
That said, once I got the hang of it, I really enjoyed the game!! I think the concept is really neat and trying to defeat the enemies closest to the player is an exciting gameplay element. Also, I found myself really impressed and happy with the 'push back' spin the sword can do. This was my favorite mechanic, because it really supported the gameplay of crowd management and trying to keep the hero away from danger. Excellent job on that!!
All in all, I think you have a really strong gameplay concept and I think you did a wonderful job executing the design. I'd suggest some tutorial text, but the art and gameplay were super fun!!