Board Thread:Answered Questions/@comment-25467429-20150619155552/@comment-148.0.197.163-20150619194702

Also it apparently needs to be in a single sortie. I did it easily with my main in the first sortie but when I used another account I bombed with it a bit but did not get it and there is no percentage progress, so it doesn't say the condition on it's details, but it does has that condition parameter.