Woah. That is insanely polished! It looks like a game I'd buy off Steam! However, like other comments said, it's pretty tough and some scenarios are literally impossible if you get unlucky with where you are when the bullets spawn. Maybe this can be fixed by increasing the player speed, allowing you to hold down a button to keep going in that direction, and having the bullets travel from maybe the top of the screen so you can see them coming better?
Also, I really like how the dialogue was displayed, but I found it tedious to listen to again after I died.