Here is the full list of all 34 Just Dance 2015 (CN) achievements worth 1,000 gamerscore.
Complete your first song.
Get 3 stars on a song.
Get 3 stars on 5 different songs.
Get 5 stars on a song.
Get 5 stars on 5 different songs.
Perform all Gold Moves in a song (No Mash-Ups)
Perform all Gold Moves in 5 songs (No Mash-Ups)
Perform only Good Moves or better in a song (No Mash-Ups)
Finish 5 songs with 2 or more players dancing.
Finish 20 songs with 2 or more players dancing.
Get a Perfect on the last move of a song (No Mash-Ups).
Get 10 Perfect moves in a row in any song.
Complete a song with 90% or more Perfect moves (No Mash-Ups).
Get 3 stars with all four players on any song with 4 Dancers.
Get 5 stars with all four players on any song with 4 Dancers.
On a song with 2 Dancers get 5 stars on both dancers.
Get 3 stars on all songs (No Alternate versions or Mash-Ups).
Get 5 stars on all Songs (No Alternate versions or Mash-Ups).
Complete a 3 Dancer song with 3 or more players.
Access the JD Wall and see what's going on in Just Dance 2015.
Dance one song of these map types: 1, 2, 3 and 4 coaches.
Spend 10 Mojo.
Spend 50 Mojo.
Spend 200 Mojo.
Unlock all Avatars and Mash-Ups (no DLC or Uplay).
Get 5 stars on Holding Out for a Hero.
Dance to a 2 Dancer song on your own.
Dance 'You Spin Me Round (Like a Record)' 3 times in a row.
Play a playlist with Kcal tracking toggled on.
Play a 40 minute playlist.
Complete a dance with 6 players.
Perform a high 5 gesture with another player.
Smile on the Autodance Screen.
Use the effects shuffle button to apply an effect to your Autodance video.