I found the WASD-click combination difficult on a laptop with a touchpad. Firing with the space bar or Z key might be less awkward.
Cool BGM!
Thanks for the insights.
The controls are probably the first thing I should untangle
I probably need to make the enemies faster and more aggressive, such that victory is more "holy crud, I made it!"
A curving track? Hmmm...that's a challenge, but, (pardon the pun) I'm game.