Here is the full list of all 13 Polynomial 2 - there are Universe of the Music achievements.
Clean tube walkthrough
Stars applaud your meteorite riding skill
Fly through 25 flowers
Fly through 10 flowers
Congratulations!
The player killed geometrix bot
Your shooting skills rock this place
We want you to be a new boss in our game
Take a break now or you will see this level with your eyes closed
You've officially graduated as Polynomial 2 flower fractal expert
The biggest explosion possible achieved
10 screenshots taken using F2 key
Beat "Badness 500" in insanity