What I'm trying to figure out is, when I look at my challenges for my newly created character, one of the challenges has a dot always lit up on it whether the challenge is selected or not. Does this mean that I have already completed all 3 difficulty levels for this challenge or if not, what exactly does that "highlight" signify. The reason I am so concerned is I am going for the "King of the world!" trophy and its been a LONG time now since I played this character, so I'm not sure if I passed this challenge or not, and need to do it with the character still "young" being the AI will develop more in Tower Defense the more you level and open up abilities. Any help on the subject would be greatly appreciated!

The dot, if I recall correctly, marks that you completed level 2 of the challenge, but I may be mistaken as it's been quite a while since I did a challenge.

the dot signefies when u have finished all 3 levels of the challenge