I completely agree with what SphaeriCactus said. Personally I never managed to bounce on more than one enemy, but I felt the vulnerability to fall from very high after destroying many enemies, definitely adrenaline.
As for the new enemy, it's a simple opponent to understand but difficult to manage in large quantities, which for now has never happened. Since I've never seen more than one at a time, which makes it easy to destroy.
A very funny thing is to die while falling because of a bullet that the new enemy fired, maybe just before he died.
You definitely have to go on like this, I can't wait to see what you'll do next time ^^