Complete the following tasks to unlock Apple Game Center achievements.

Achievement	How to unlock
1000 elements on Time Attack	Eliminate 1000 elements on Time Attack mode.
300 elements on Time Attack	Eliminate 300 elements on Time Attack mode.
3x Combo	Make 3x combo on any game.
500 on Time Attack	Eliminate 500 elements on Time Attack mode.
6x Combo	Make 6x combo on any game.
9x Combo	Make 9x combo on any game.
Complete Compounds Mode	Complete all levels of Compounds mode..
Complete Temperature Mode	Complete all levels of Temperature mode.
Complete the game	Beat all Temperature and Compounds levels.
Half Compounds Mode	Beat 25 first levels of Compounds mode..
Half Temperature Mode	Beat 25 first levels of Temperature mode.
Read help	Understand the game basics.
Three modes	Play a level on the three modes.