Is it the gameplay that's the issue or that the download didn't work? Because you're right about the download I should have tested the export on a bunch of systems before submitting. Gameplay wise let me know what can be added/improved.
It simply did not work for me as intended I think on Windows. No hit detection, no points going up. Only thing that did work was the spin and shoot when pressing A + D.
No worries, everyone has to start somewhere. You could do interesting things with the core mechanics though, let us know on Discord in #updated-jam-games when you have updated and fixed your game. I'll have another look at it. ;)