This is missable. Once you have passed the four hidden moves in the decade while playing story mode and earned enough stars, you will be able to decipher the craze (The Hustle for the '70's, the Macarena for the '90's, etc.) You will need to get Nice or Flawless on each of the 4 moves in the craze on your first try to unlock this. There are 5 crazes in the story mode, so you have 5 chances, and it isn't that hard since you have seen the four moves before. If you somehow get to your last craze and do not have the achievement, you can dashboard if you fail. If you do not have this by the time you have passed "Scream," you will need to start a new save file to try again or start a new story on a higher difficulty.