Here is the full list of all 46 Hyperdimension Neptunia (JP) trophies - there are 34 bronze, 8 silver, 3 gold and 1 platinum.
Game completed
New game started
Created an original combo
Synthesized item used in battle
Purchased items
Gathered information led you to find and clear a quest
Arrived in LEANBOX
Arrived in LASTATION
Arrived in LOWEE
Returned to PLANEPTUNE
Accessory changed
Processor unit changed
Battle formation changed
Fought in Patron godess form during battle
Nippon Ichi joined your group
GUST joined your group
Performed a chain of 5 link combo
Obstacle destroyed
Monsters call
Item search skill activated
First battle
Dungeon tutorial cleared
Duel with IF
bring Neptune back to life
Found a piece of the key parts in LEANBOX
Perfect demonstration
Found a piece of the key parts in LASTATION
Deafeated all monsters appreared in the city
Found a piece of the key parts in LOWEE
Broke the "Histoire" book seal
Realise the existence of Magiquone
Legendaryweapon"SANNGENNSENNKENN" completed
Legendary weapon "DAIKENNKYUU" completed
Legendary weapon "SOUSIKIKYOJYUU" completed
Legendary weapon "TATUJINNNORENNSOU" completed
Scenarion cleared
Walked through the entire map
Performed a 100Hits combo
Cure 20 times a wounded "friend" during battle
Performed "baton pass" 50 times
Patron godess Green heart joined your group
Patron godess Black heart joinded your group
Patron godess White heart joinded your group
Combine all the Hards power to defeat True Magiquone
Completed all the time attack in S-Class
Obtained all histoire