Here is the full list of all 46 Hyperdimension Neptunia trophies - there are 34 bronze, 8 silver, 3 gold and 1 platinum.
You've been diagnosed with Neptunia.
Obtained all content.
Defeated Arfoire with the power of all CPUs combined.
Obtained S rank in all Time Challenges.
Been everywhere in Gamindustri.
Switched with back-row members in battle 50 times.
CPU White Heart joins the party.
CPU Black Heart joins the party.
CPU Green Heart joins the party.
Cleared the main scenario.
Assembled the legendary weapon, Wisdom Bow.
Assembled the legendary weapon, Trust Spear.
Assembled the legendary weapon, Dual Revolver.
Helped a wounded ally during battle 20 times.
Reached 100 HIT with your original Combo.
Assembled the legendary weapon, Trinity Blade.
The truth about Arfoire is revealed.
Released Histoire's seal.
Obtained the Key Fragment in Lowee.
Obtained the Key Fragment in Leanbox.
Neptune returns to the party.
Defeated the monster in town.
Obtained the Key Fragment in Lastation.
Created an original Combo.
But it was the best demo ever.
Nisa joined the party.
Gust joined the party.
Arrived at Lowee.
Arrived at Leanbox.
Returned to Planeptune.
Changed your accessory.
Arrived at Lastation.
Connected Combos using Combo Link.
Used Explore to advance the story.
Fought in battle as a CPU.
Changed your processor unit.
Changed your formation.
Found a hidden treasure.
Encountered IF.
Had your first battle on your new journey.
Purchased something at the Shop.
Cleared the tutorial dungeon.
Lured out a monster.
Destroyed an obstacle.
You used your synthesized item during battle.
Started your journey in Gamindustri.