Not bad and i always liked Centipede and clones of it. But one thing is a bit strange. When starting the game, then the user initially hears neither FX nor music, during the gameplay. That's a bit confusing, you could even consider this a bug or something like that, because you don't always have the itch.io manual-text for the game, that describes what to do with F5. Months later, this can be forgotten and you then no longer have this text and then the user must find this out by himself. At some point, you might get the idea, to try out the F keys and then you realize, that you can use them to activate the music or FX. Or maybe you never find this out and you think that it's normal to have no FX and no music in this game.
Wouldn't it be better, if (1) at least the FX were active by default, instead of not hearing anything at all, and (2) wouldn't it actually be better, if you could also choose between FX and music, directly in the game-menu (where you can choose between joystick and keyboard controls)? A text there could explain the F-keys and their function on the audio-settings.