Ericzander is right. Go with 4 cerlics (sic), but kill everything on the way down; much more fun if you have the time, and if you don't why are you playing the game anyway?
Tip: if u r having probs with lag exit game and reload; it seems sometimes the game doesn't load completely the 1st time (tactic has worked many times 4 me). Also, never used the save game option; using the escape wings seemed to auto-save, especially when u start a new level of 10 floors. mostly I just minimized the game when I had the good screen but other things 2 do.