I can get though the first 2 parts of this ok. But them I open the lock and all bubbles are surrounding those doom guys. No way can I hit a bubble without hitting one of them. I must be missing something. Any suggestions?
Once you get up to the section above the second lightning bolt, you have to leave certain bubbles attached to the chain before you open the lock, that way you can use them to pop the next set of bubbles without hitting doom bubbles.
So if you've got...
Then you've got to do this...
(Sorry, couldn't think of how else to diagram it, hahaha.)