This is the plug-in which tracks kills and shows messages for killing sprees (multiple kills without dying). At 5 kills in a row, it shows a "Rampage!" message. At 10, it shows a "Killing Spree!" message. At 20, it shows "Unstoppable!!", and for every 5 after that it shows "continues to rage on". If a player kills another player that had reached one of the spree thresholds, it will show a special message indicating who stopped their spree.