Every charts are bad. A chart can be called "good" when it is less bad than the other ones.
If you say a chart is bad without a proper reason, then blame yourself for not being good enough to judge it. If you can't play it, you're just bad at playing it.
Has at least 1 featured level
Has more than 5 featured levels
Play Intro in ranked mode.
Attain the perfect score on any level.
Attain the perfect score on 3 levels.
Attain a score of 999000+ on any level.
Attain a score of 999000+ on 10 levels.
Get 1000 combo on any level.
Get 2000 combo on any level.
Get 3000 combo on any level.
Reach 100 ranked plays.
At least you now own this achievement.
7h15 15 7h3 w4y w3 5p34k.