Right now, the game's start is still pretty jarring. I'm a strong believer that a game should explain itself when playing it, either through an in-game tutorial or by giving the player time to figure out the controls for themselves at their own pace; like an easy, short first level to get to know the controls. Because now I just got thrown into the game and died immediately not yet knowing what to do, lol.
The art & music feel fitting for the futuristic sci-fi vibe this has and complement each other fine. I didn't find the music distracting at all, if anything I think these kind of games need a good soundtrack to hype up the player. I really like the amount of upgrades this game provides and coupled with the randomization gives it good replay value.
I did encounter what looks like a bug: when I got the upgrade screen the first time, I picked the Star Buddy, and then got another upgrade screen (or it reset, probably, as it also listed the Star Buddy power-up again). But the mouse disappeared and I heard the game music start up again, and without being able to do anything, I suddenly died and the game over screen appeared. Basically looks like the game resumed but I remained stuck in the upgrade screen. This didn't happen again when I replayed the game, but it's worth mentioning.