Starting Bubbles: 50
Recommended Potions: 7 extra Bubbles in the starting cauldrons, 3 extra holes in the ceiling and Rainbow bubble
Points needed for 1, 2, 3 Star: 95 000, 125 000, 150 000
Special bubbles: 2 Lock Bubbles(1 chain), Doom Skull Bubbles,
I would avoid taking out any Mystery bubbles before the Ghost Lock Chain is unlocked, as there is a real chance to get a Bomb from them. I is preferable to take out some Mystery bubbles when it is safe though, aka after unlocking the chain so you can shoot down the Doom Skull Column within nine shots after a potential bomb starts the countdown. Most of the time I have played level 161 i have needed the extra score that a lucky Mystery Bubble shot gives me to pass the level.