Thank you so much for such detailed feedback! I'm honestly surprised you noticed all those little details, like the forgiving hitboxes and the brief freeze on enemy bullets after the chain attack. I actually spent a lot of time tweaking those small things because I wanted the game to feel as fair and satisfying as possible.
Ironically, I probably spent too much time polishing those details instead of adding more levels before the deadline!
I'm also glad you enjoyed the strategy behind the damage scaling and took the time to point out things like the tutorial and contact damage. Thanks again for taking the time to write such thoughtful feedback!