Nice. Really simple, but the music is incredible, hahaha.
Graphics are nice and consistent, the sfxs sound good.
Gameplay is a bit boring. You can move almost all the way to the right and you're mostly safe. Didn't play like that, but it's something to keep in mind. I didn't see any enemy or bullet variations.
Overall, it's a good game, though it kind of reminds me of those tutorial games that come bundled in game engines to teach you how to make games or the flash games of old.