Starting Bubbles: 30
Recommended Potions: use the potion for 3 extra holes in the ceiling
Points needed for 1, 2 ,3 Star:
45 000, 60 000, 80 000
Doom Skull Bubbles,
Try to stop the overall infection immediately at level 88. You don’t need to care about the healthy column in the middle, because you are in a hurry to burst as many bubbles under the infected bubbles before the infection spread. Be efficient and try to burst bubbles from two (of the six sick) columns at once. Doing a good job with the first dozen balls will let you ease the rest of level 88.
Here is a good video for level 88, brought to us by skillgaming on youtube: