I'd love a skip option for the boss intro. Having to wait like 30 seconds between attempts is a bit long for my tastes - especially with the sheer number of projectiles to dodge / clear (since the red ones can be popped). Enjoyed the carnival vibes; the music and showtimey-ness was very silly and fun. The spinning floor felt like it incentivized circling around the boss too.
If there are other bosses, I didn't get to them. Just didn't have it in me to get the skill needed to beat boss 1.