Here is the full list of all 54 Hatsune Miku: Project DIVA Mega Mix+ achievements.
Watched 3 hours 9 minutes and 39 seconds of music videos.
Watched 39 minutes and 39 seconds of music videos.
Spent over 39 hours 39 minutes and 39 seconds playing Rhythm Game.
Achieved player rank 39.
Achieved a PERFECT on 100 songs in Rhythm Game.
Achieved a PERFECT on 50 songs in Rhythm Game.
Achieved a PERFECT on 10 songs in Rhythm Game.
Cleared 100 songs in Rhythm Game on EXTREME or EX EXTREME difficulty.
Set an edited T-Shirt on six characters in a song (Song Specific only).
Set an edited T-Shirt on any character (Song Specific only).
Obtained 150 accessories.
Obtained 100 accessories.
Obtained 50 accessories.
Obtained 600 modules.
Cleared 50 songs in Rhythm Game on EXTREME or EX EXTREME difficulty.
Watched all movies in Attract Mode Theater.
Cleared 10 songs in Rhythm Game on EXTREME or EX EXTREME difficulty.
Obtained 500 modules.
Obtained 70 modules for MEIKO.
Obtained 10 accessories.
Obtained 50 modules for MEIKO.
Obtained 70 modules for KAITO.
Obtained 70 modules for Luka.
Obtained 70 modules for Len.
Obtained 400 modules.
Obtained 70 modules for Rin.
Cleared 150 songs in Rhythm Game.
Obtained 50 modules for KAITO.
Achieved a PERFECT in Rhythm Game for the first time.
Obtained 50 modules for Len.
Obtained 50 modules for Luka.
Achieved player rank 20.
Cleared 100 songs in Rhythm Game.
Obtained 50 modules for Rin.
Obtained 300 modules.
Obtained 70 modules for Miku.
Set 39 types of recommended modules on any character (Song Specific only).
Cleared a song in Rhythm Game on EXTREME or EX EXTREME difficulty for the first time.
Cleared 50 songs in Rhythm Game.
Achieved player rank 10.
Spent over 3 hours 9 minutes and 39 seconds playing Rhythm Game.
Earned a total of over 39,000 VP.
Set 10 types of recommended modules on any character (Song Specific only).
Obtained 50 modules for Miku.
Achieved a 200-combo in Rhythm Game.
Watched 3 minutes and 9 seconds of music videos.
Spent over 39 minutes and 39 seconds playing Rhythm Game.
Set a recommended module on any character for the first time (Song Specific only).
Used the T-Shirt Editor for the first time.
Achieved player rank 2.
Cleared a song in Rhythm Game for the first time.
Achieved a 39-combo in Rhythm Game.
Achieved a 100-combo in Rhythm Game.
Cleared the tutorial.