I found a strategy that works well for me. Farm the baby purples into adults, then farm the babies that come out. If you do this enough all the glooples on screen will be harmless purples. In theory you could go all the way to the end with little to no chance of dying. This also helps with the high score and combo awards.
 "Sonny 2"){kind=icon}
 "You Find Yourself In A Room"){kind=icon}
 "Amorphous+"){kind=icon}
 "Crunchball 3000"){kind=icon}