Well dang, this goes unexpectedly hard.
Tons of fun and easy to get into. It's got memorable style, incredibly smooth animation, awesome soundtrack, and just a perfect blend of shitpost humor. And you can't forget the fact that it's a game about kicking people in the gonads. God I love newgrounds.
Ran into a couple minor bugs. I randomly got a copy of the first boss drop after dying for the first time. And I somehow got Baa stuck upsidedown after performing a special attack. This was even before I toggled the option, but it did return the character to normal after disabling it.
Really can't think of any improvements, though I'd love to see more taunts and items. But as is, it's definitely very full fledged for being a short game.