Nah, I'm Good challenge requires you to finish the ladder with both multi and bias counts less than the top-1 ranker did.
This challenge is quite easy since it does not require you to spend a lot of time for walling or farming a lot of power and points.
The only challenging part of this challenge might be finishing it off in AH-ladder: the combination of lower multi_count and a low max_asshole_count might leave you without a chance of participating in big ritual.
multi_only and bias_only options from the challenge conditions: it's just way too easy.