There's no more "challenges." I like the show, it's allright. God, I wish they wouldn't edit the fights though. Yes, they EDIT the fights. It's the lamest concept ever. Some people say it makes the fights more exciting or something, but....Come on. It's just lame.
It's an ok, one hour show. This season they're going to show the fights in their entirety, but from what I saw last week - They're still slowing things down and cutting little seconds here and there. I just don't get the concept behind editing anything.