Here is the full list of all 14 The Polynomial - there are Space of the music achievements.
Use the sun to kill an enemy
Eat too many (more than 10) snowflakes within game life. Snowflakes will be present in Christmas level when its Christmas.
Killed 1 enemy (TEST)
Kill 500 enemies in 1 minute.
Kill 10 enemies in 1 minute.
Kill 30 enemies in 1 minute.
This is a hard one. Kill 100 enemies in 1 minute. Try using autoaim and fast bullets.
Kill 100 enemies in 5 minutes
Like 100 kills in 1 minute, except you have to keep the rate for 5 minutes.
Kill 500 enemies in 20 minutes.
Kill 10 enemies in process of eating an ally (ghost) in 1 minute.
Kill 100 enemies that are in process of eating an ally (ghost) in 5 minutes.
Kill 30 enemies that are in process of eating an ally (ghost) in 1 minute.
Fly through 10 flowers in 5 minutes.