Here is the full list of all 47 Hyperdimension Neptunia mk2 (JP) trophies - there are 36 bronze, 7 silver, 3 gold and 1 platinum.
Acquired all trophies.
Started the game.
Watched the event "Grave of the industry"
Watched the event "Trapped Goddess"
Watched the event "PeroPero"
Watched the event "Live Stage"
Watched the event "Encounter with Histoire"
Watched the event "Rescue the Goddess"
Watched the event "Hot Spring"
Watched the event "Let's play games"
Chained your original combo.
Created items.
Encountered with Uni.
Encountered with Rom and Ram.
Neptune joined your party.
Vert joined your party.
Noire joined your party.
Blanc joined your party.
Nippon Ichi chan joined your party.
GUST chan joined your party.
5bp chan joined your party.
Nepgear upgraded.
Uni upgraded
Rom and Ram upgraded
Beat Judge the Hard.
Beat Brave the Hard.
Beat Trick the Hard.
Beat Magic the Hard.
Released Planeputune.
Encountered with Uranus.
Obtained the Magic sword.
Fought your first battle.
Fought over 100 battles.
Fought over 500 battles.
Chained 80+ original combo.
Dealt maximum 100000+ damage.
All characters reached level 99.
Watched the Normal Ending.
Watched the "Makers" Ending.
Watched the "Planeptune" Ending.
Watched the "Leanbox" Ending.
Watched the "Lastation" Ending.
Watched the "Lowee" Ending.
Beat Delphinus.
Watched the "Ruling" Ending.
Watched the True Ending.