Meet the Crew Achievement
Meet the Crew15
Play a song with every human dancer character in Perform It! or Dance Battle mode.
There are eight human characters. ELIOT the robot does not count toward this achievement. If you play down the list, you will achieve this by the song "Dip It Low". Leave the dancer selected as Song Default, that way you unlock each character while playing down the list, and will unlock this achievement by the time you finish every song.