First off, I'm incredibly impressed you wrote this in assembly. Second, wow this game was awesome! It's a simple concept, yet executed to perfection and I really feel like this captures the essence of a retro game perfectly. It's very polished from the animations, music, sfx, all the small things feel really intentionally designed.
On top of that, the gameplay itself is fun and addicting. I played for far longer than I'd like to admit, and I can say that it feels good and rewarding to get good at. It is very satisfying to dodge, weave, and block, all while rotating to generate score and keep your combo up. The different types of projectiles were also interesting challenges for the player to solve, while not feeling too overly difficult to where it made it unfun.
I made it up to when the music starts to change, I didn't get past that but I did break your high score :)
