Double Kill
Kill three and kill many.
Four massacres in a row
Five consecutive killings are unbreakable, which can also be translated as "uninterrupted killing" here.
Incredible six murders in a row. This is an incredible killing.
Killed seven people in a row. Do you want to taste what I can do? Are you confused about my question? Or "Do you want to fix me?" COME GET, which killed eight people in a row, is translated into "Do you want to do it again?"