I'm glad you liked it. I agree that adding feedback audio and more patterns would really improve it, sadly I didn't get to do it in time for the submission deadline.
If you plan on making it a game after the jam, would be a good game too, you may want to create the patterns as scriptables, that's what I did, so they are invoked by the spawner at will. It just needs the angle rotation and shot speed and voila
I wasn't sure how to make an enemy so I just made a simple bullet spawner then rotated it. What you said will help me out so much when I try to improve it. Thanks