I kinda lucked out when I got it, it was a basically fine question that got downvoted because there was some profanity at first and people incorrectly thought it was a dupe... (because of that I also got Hero of Questions on it).
@Jedi I've only been here something like 7 months, so most of my comments were less than 6. Maybe there's a recent cutoff (like before winter break), but it can't be that recent.
I think it's just deleting 8 upvoted comments (possibly has to be your own, that's how I got it by deleting old comments that got 1 upvote but weren't really relevant anymore anyway).
I didn't skip any edits and I got it. Someone recently suggested that it might be 5 of some combination of improve/edit reject/edits in one day, and that tracks with my activity when I got it.
I'm guessing on Maverick your own upvote doesn't count (that is, if the question's gone from -3 to +3, but one of those + was your own upvote after posting your answer)?