I've decided to try using a standard format for all my feedback this time around. Please excuse me if I come across as overly curt or miss something important about your game. I'm writing these all quite hastily as there are a lot of games in the jam this year!
What I liked
The minimalist graphics and sound are something I thought I'd hate, but they work surprisingly well and I grew to like it
The gameplay is surprisingly tight and balanced
What I didn't like
I generally prefer easier games, but I got used to this one. And somehow it works.
I wish highscores were tracked and saved.
Did I think it was so bad it was good?
No. Minimalist, yes. Unfinished, maybe. Bad, no.
My thoughts on the modifier implementation
There's no winning condition and it's quite difficult, but I'm not sure if this is a deliberate modifier implementation or happenstance.
Other remarks
I'm still not sure if this is using procedural generation or not.
The game is in German but since there's very little text I was able to figure it out without a translator.
Verdict
A neat little minimalist shooter, but not bad enough to be so bad it's good.
If you have any questions, comments, queries or concerns, please reply and I'll do my best to get back to you.