Basically all you do is collect as much money as you can before you die. This game has a few extras in it. While you are at the menu screen press the END key to check out the cheat menu where you can change your in-game name. In the game there is a square up in the left corner to toggle the music on/off.
P.S. This will be the last time that I will update it unless there is something major wrong with it.