Here is the full list of all 33 Polychromatic achievements.
Kill 100,000 enemies.
Get a score of 850,000 in Timed mode.
Get a score of 2,000,000 in Endless mode.
Dash 100 times.
Fire off 100 blasts.
Get a score of 850,000 in One-Life mode.
Get a score of 350,000 in One-Life mode.
Get a score of 50,000 in One-Life mode.
Kill 10 enemies with one dash.
Reach wave five without firing the gun.
Earn an extra life while having no extra lives.
Kill 40 enemies with one blast.
Finish Timed Mode with no kills and no deaths.
Reach wave 20.
Have nine dashes at one time.
Have at least six extra lives, blasts, and dashes at one time.
Get shot five times.
Reach wave 10 without dying.
Get a score of 550,000 in Timed mode.
Get a score of 250,000 in Timed mode.
Complete a game.
Get a score of 850,000 in Endless mode.
Earn 250,000 points without dying.
Get a score of 250,000 in Endless Mode.
Die the first time.
Kill an enemy.
Complete 100 games.
Get a score of 5,000,000 in Endless mode.
Earn 50,000,000 points across all games.
Reach wave 25.
Reach wave 30.
Have nine extra lives at one time.
Have nine blasts at one time.