I’m feeling pretty good about what I’ve gotten done today. I have a “playable” version with the basic mechanics all good to go. And music! (It sucks, but still.)  Tomorrow I add scores, losing conditions, more enemy types, additional levels (or just continuously spawning enemies), and start and pause screens. Here’s a screenshot, you can click to play the WIP:

Feedback appreciated!

*Edit: Uhhh. Oh yeah. Controls:

Movement: Arrow Keys or WASD

Shoot Horizontal: X or ,

Shoot Vertical: Z or .

Also, XBox controllers should work.