Great concept and I really love the aesthetic! Nice job! 

Darkness is a nice touch, style is great. I'd like to see different enemy behaviors and maybe a lot more bullet hell on the screen at once. Fun though!

Simple but difficult! I liked the aesthetic and different enemy designs.

I liked the different enemy designs.

This is cool

Your game looks really cool and is enjoyable! Good job on your first game jam, keep at it!

Nice game! Simple but difficult it gives you no breathing time!

Very intense, well done! I liked how easy to understand the game was, and how challenging it was from the beginning, there was no waiting around! The variety in enemies was nice to see as well, and I liked how they were introduced over time and all visually distinct, though you might want to change the green crosses, since they did look a lot like a health powerup. The music was a brilliant choice; it really added to the chaotic feel of things, and fit very well in those moments where I was getting swarmed! Very nice work, it was a fun game!

I like the colour scheme you put into this game!

I agree with the below comments, a bit more feedback would be great (particle, sounds, screen shake) when collecting/shooting/destroying, etc. 

Love the idea of the double cannons! The art style feels identical to Geometry Wars, which I do love but it just felt a little too close.

I always enjoy a good bullet hell! Music added to the intensity and chaos. A bit more polish like screen shake and hit sounds would be a nice touch and bring everything together, but I well enjoyed this game for a good bit. Also, a score counter would have been another nice touch, but still a fun game.