New Quest Challenges

I've been loving playing the quest and have been very excited to finally get to the point where I can access the challenges. It was a worthwhile goal.
Now that I've tried a few of them, I wonder if there is a further goal I can achieve by winning all five of the coloured challenges, or is that all there is? If so, I'm disappointed to have the quest end so soon. A quest with only two levels of achievement doesn't seem like much of a quest to me.

Now that I've tried a few of them, I wonder if there is a further goal I can achieve by winning all five of the coloured challenges, or is that all there is? If so, I'm disappointed to have the quest end so soon. A quest with only two levels of achievement doesn't seem like much of a quest to me.