Really good game overall, I enjoyed the gameplay and the art/music is amazing too.
As for the issues:
-Confusing telegraphing. There's lots of bright flashing lights and dinging sounds for basic actions. This, on top of every move being so fast and the dodge being so short, makes the dodge ability feel like it's just "there", and I get by much easier by mashing my strongest attacks.
-Explosive teleport ability is a win button and you can mash it to infinitely juggle everyone, even The Goat.
-Too much reading. There are a lot of options to choose from, they all have long descriptions, and they branch off of each other which further complicates things. The font was also hard to read when you get the boss reward.
-I know I already mentioned the attacks being too fast, but I think it's really important. If the attacks were slower, you could have a lot more room for diversity (with some quicker attacks here and there), and it would be at least a little more reasonable to react and dodge.
-I kept randomly teleporting to the edges of the arena with no animations or effects indicating why that was happening. Not sure why.
-It's hard to tell why enemies are or aren't being stunned. If the enemies have armor, I think it's important to have obvious visual ques to indicate it. If certain attacks do or don't stun, I think it should be explained to the player in some way or another.
-There didn't seem to be any way to escape combos, and when I respawned I didn't get teleported or give invincibility or anything like that, so sometimes I would lose 2 lives from 1 combo, lol.
If you do decide to make a post-jam version of the game, I'd definitely be interested! :)