Easy "25000 KILLS" Achievement...
	Various Steam Achievements...

The best points/second to do this is on Professional->Music you get 1205 kills for just over a minute and once you play it through a few times you get used to the which keys to press when.

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
100000 KILLS	100000 KILLS.
25000 KILLS	25000 KILLS.
666 KILLS	666 KILLS.
9999 KILLS	9999 KILLS.
Accuracy 100%	Accuracy 100%
Change Music Vol	Change Music Vol.
Click Backspace	Click Backspace.
Click End	Click End.
Click Enter	Click Enter.
Click MainMenu	Click MainMenu.
Click Pause	Click Pause.
Click Tutorial	Click Tutorial.
Click Undo	Click Undo.
Kill 1111 meteors in 1 lvl	Kill 1111 meteors in 1 lvl.
Quit the game	Quit the game.