I think you could have cut the intro, as it's too long, you probably discourage a lot of potential playtester because of it.
The art is pretty good, however, the background is too distracting, I had a hard time to notice my ship and the ennemies.
Control wise, it's dynamic !
Maybe your game would greatly benefit with some particle effect to add more juice, and enhance this gameplay :) It's the perfect type of game where you can go crazy with it, maybe add some camera shake as well. BUMP THE JUICE ! :D
Cheers for your jam o/