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