Aren't you seeing the overlay instructions in-game? they should start with "Balls never go out, hit them with you're paddle to collect charge" then go on to explain upgrades, shooting, and shield bricks.
Special visitors only come when certain conditions are met. Oh, but we're not going to tell you what those conditions are in this, the world's worst tutorial. You just have to suffer through the game until you accidentally succeed.
A couple minor issues with the voice balloons not matching the text, and the past tense of "slay" is "slain", not "slayed" Still and all, an awesome game and I had a lot of fun getting all the achievements, which I don't usually bother to do.
Aren't you seeing the overlay instructions in-game? they should start with "Balls never go out, hit them with you're paddle to collect charge" then go on to explain upgrades, shooting, and shield bricks.