Before I set the lower Bombs off at level EI 4-10 i make as good as possible room to shoot above them, so I can drop them fast before they detonate. (See picture above)
After dropping the lower Bomb row I might have to patch up some Bombs in the upper Bomb row, that is easy and will hinder the Bombs from exploding. When the Bombs are sealed again it is quite easy to aim for the right part of the ceiling to get the needed 9 holes in the ceiling. Sometimes it is harder though, especially if you haven’t bought the Magic Potion for 3 extra holes.
Video 2 stars no charms by Jorge Luis Valenzuela Melendez
Special thanks to Mariela for inspiring me to make this guide.