I laughed my butt off on the toughest difficulty. It is quite funny to see all those bullets flying at once. But where the game strives also lacks in certain areas. As much as I appreciate the game, I feel like it could use a different background, rather than just default white.
Some sounds would go great with this. Maybe add some suiting music to this too? I like what I see, keep going, and improve on the areas that need it. I wish you luck on future submissions.