The blurb for Refiner says,
Edited and answered 50 questions (both actions within 12 hours, answer score > 0)
which dates back to here.
Breaking this down, we have "edited and answered 50 questions". That's five zero, fifty. "Edited and answered" -> it's ambiguous whether that means you edited 50 questions and also answered them, or whether you edited 50 questions and answered 50 questions which may or may not be the same. But the number is still fifty.
both actions within 12 hours
That is stupendous. And all you get is a silver badge? Of course, if there is no further qualification, you just have to edit and answer 4 questions per hour. Okay, fair enough, but
answer score > 0
That's really impressive. 50 questions answered in 12 hours, and all of them upvoted. And since badges are per site, that's on one exchange.
Surely this person deserves a new car...unless I'm somehow misreading this by taking it at face value.