Needs more variation
I know this is another Bubble Tanks 'episode', but it needs some more variation. The editor was a good idea, it really added, but the main thing is still hopping from bubble to bubble and shooting enemies. This might bore after a while. So I think that the next time, you should variate just a bit more.
Also, I've noticed a bug. You sometimes can't lose health when you get hit by an enemy. I noticed this at the tutorial, when I encountered the shooting enemies. And your health bar isn't always visible. You might want to fix that.
For the rest, well done, but the reasons I just said give me no other option than giving you a six.