Here's a tip for getting 3 kills at once and for the 130 tiles in a zombie paint match (although I have not gotten it yet): put all weapons in the game and try to get both the super flame power up and the skull bomb power up. That combo blows up 1/4th the stage.
On a side note, I had a blast playing with LinkinPrime, Musicnoteless, I0, Zewone, Mr. Jared and of course CheapyD this morning. Here's to many more times on enjoyment.