I can't seem to complete the 8 KOs in Cruel Smash as Lucina challenge, the most I have gotten is not even 6, but 5. After so many attempts I just gave up. You think they would let you hammer challenges involving unlockable characters once you unlock the character(s) in question, but they don't. This is far worse than Smash Tour. I do keep using Counter over and over, but I still get KOed before I reach my desired mark. Perhaps they should have just made it get 5 KOs.