Awesome job! And I really enjoyed your devlog during the jam as well.
I really love the style, absolutely nailed it. That first enemy's spinning attack is so dope. I think the movement speed is fine, not sure if it needs to be faster, but the jump feels very floaty. But, that being said the platforming feels great and pretty accurate, so maybe it's just me.
Another thing is maybe more feedback when losing health? I looked up at one stage and saw I only had one health left, and I hadn't thought I lost anything (I think I might have lost health falling when trying to get the powerups, or maybe the saw blade hit me?).
I've only done the first character, but will definitely try to go all the way through!
Oh, one more thing, some of the sounds are awful, but in a REALLY good way, if that makes sense. I love it!