Starting Bubbles: 40
Recommended Potions: Rainbow Bubbles and 3 holes in the ceiling
Useful Charms: Precision and Insurance
Points needed for 1, 2, 3 Star: 65 000, 120 000, 185 000
Start with dropping the BOTH lower columns of skulls. If you set off the bomb before both of the columns are down you’ll have very small chances to succeed getting down the bomb before it blow up.
3 star charmed video by Kerstin Hofmann