Typing as I play (hope you don't mind a longer feedback):
Music: I'm a big fan, that's atmosphere!
Options: small glitch, the sliders reset when going back to the menu but I like that I can adjust the volume :-)
Graphics: stylish, it has that new old school look.
Gameplay: It lacks a little more punch in the shoot for my taste but it is easy to read and the piercing bullets with numbers poping up is really nice. I started thinking it's a bit slow to being runing in evry direction escaping enemies and when I tough I had it, faster enemies!
Overall, really gooood!