User blog comment:IamJakuhoRaikoben/Chapter 412: Dance Unto Ishgar, Review./@comment-5288632-20141208162854/@comment-83.253.84.32-20141208165631

Acnologia is one of the main villains of Fairy Tail so hes probably only down for a short time to show how powerful Igneel is and later Acnologia will get up again and attack Fairy Tail and the dragons. One of the main villains of a manga obviously cant be defeated in that kind of way.