I think its unfortunate that this is download-only, so not as many people will play it.
I really like your game mechanic, it is a lot of fun. The only critiques I have are that the difficulty/enemy count ramps up a little quickly and can be hard to keep up with, and that the number of lasers is unlimited so you can afford to spam them and be less strategic.
The art reminds me of old DOS games, so all good there as well.
This is my favorite game of the jam so far, I can't believe I'm the first to rate it. Excellent work.