User blog comment:Helloworld2/Anyone know how to get Exterminator?/@comment-25659393-20180308013940

So the badge Exterminator has been almost impossible to get for a long time now. I'm not sure they've handed it out even in the past two years besides to those who beta tested some of their content around a year ago. You can, however, still get Friendly Hacker by submitting a report through HackerOne.