Bubble Bobble/Levels 31-40

Level 35
The first very hard map if you're one-player. Jump up on a bubble immediately and kill the ones in the top. After they died, you'll have to jump through the top - just make sure that enemies aren't walking right on top of you when you do so.

Another way to do it is to kill the enemies at the bottom first and then try to clear the top, but if the top enemies stay on the bottom platform, it can be very hard to get up without dying.