The sprites are charming, but as other users pointed out you should be sure to set all of your pixel sprites filters to 'point' (in Unity, you can do this is the sprite editor that comes up in the inspector when you select a sprite asset) - that will deal with the blurring edges that you see on the main character and the enemies.
The enemies are a little strong too, as some other users have pointed out. The player has a tendency to get stuck inside of them and get combo'd to death.
I thought the premise was original and funny though! I had fun with this! And congrats on completing your first jam game, it's not easy work!!