This game has a great concept that's executed super well. The boost feels super impactful and juicy, and the particle work you did also really shows. I also really enjoy the design choice of letting the player choose every level so they can experience all the content regardless of their skill level - it's a great feature especially for jam games.
However there are a couple cons as well:
1) The game was a tiny bit hard to understand at first: if there was some kind of text that described the bars at the top that would greatly help (also in the tutorial level I kept thinking that I had to boost INTO enemies rather than AWAY from them).
2) Developer syndrome, the game was balanced to be too hard.
3) The most glaring issue is that sometimes when I was holding down the thrust I couldn't boost. Simply put: it was super frustrating and instead of feeling like it was my fault for dying it was the game's.
Besides that I had a great time playing. Nice work!