Here is the full list of all 13 Polynomial 2 - there are Universe of the Music achievements.
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
Clean tube walkthrough
Take a break now or you will see this level with your eyes closed
Stars applaud your meteorite riding skill
Fly through 25 flowers
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