Thanks so much for the feedback! You are absolutely right, the various enemy types were meant to have different strategies for attacking / defending - making it a lot more interesting to go through the game. I completely ran out of time for the jam and had to spend the last few hours getting balance in a good place so I could at least submit what I had.
I've included this in the post-jam version which I will upload as soon as the rating period is over.
Thanks so much for playing!