Here is the full list of all 47 Hyperdimension Neptunia mk2 trophies - there are 36 bronze, 7 silver, 3 gold and 1 platinum.
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Defeated the secret boss, Delphinus.
Everyone reached level 99.
Saw the Planeptune ending.
Saw the Leanbox ending.
Saw the Lastation ending.
Saw the Lowee ending.
Saw the human ending.
Finished the Conquest ending route.
Obtained the cursed sword of legend.
Viewed the True ending.
View a certain CG Image.
Met with Caelus.
Fought 500 battles.
Saw the normal ending.
Regained Planeptune after its capture.
Defeated CFW Magic.
Defeated CFW Trick.
Rom's and Ram's abilities enhanced.
Defeated CFW Brave.
Uni's abilities enhanced.
Dealt over 100,000 damage.
Blanc joined the party.
Noire joined the party.
Vert joined the party.
Neptune joined the party.
Defeated CFW Judge.
Nepgear's abilities enhanced.
Achieved an 80-hit original combo.
5pb. joined the party.
Gust joined the party.
Met Rom and Ram.
Nisa joined the party.
Fought 100 battles.
Met Uni.
Developed an item.
Performed battle for the first time in years.
Created your own combo.
Started up a new game in Gamindustri.