Having the different levels was a really interesting take on classic Centipede. And I liked it! Loten mentioned the Mario 3 map vibes and I can totally see that. Might have to try that myself at some point.
I had a little issue with the offscreen sprites, even on full screen. It felt like the Centipede went slightly off the edges a little. Same for the spider. I couldn't tell if it was "bouncing" off the edge, or just a new one respawning quickly. But it was super subtle and not game breaking. Could just be a personal preference, so take this with a grain of salt.
The polish on everything was spot on. Great use of the Chromatic Aberration type effect (unsure what it's called in Godot). Perfect amount of screen shake. Good particles. Just really well done all around.