Cool concept ! Parrying felt a bit hard to use properly, I died a lot because it ended right before the last projectile hit me (And the sun betraying me at the last second in the process) :( A little telegraph (Animation, color blink or any kind of cue) before enemies shoot at you would help a lot surviving !
I don't know if this was intended, but enemies still shoot at you once before dying if they are being hit !
Anyway, it was still a lot of fun, the mood is quite original and it felt good to play. I got a score of 500 on my best run, I don't know if it's good or not !