Here is the full list of all 50 Naruto Shippuden: Ultimate Ninja Storm 2 trophies - there are 42 bronze, 4 silver, 3 gold and 1 platinum.
You've cleared the Prologue.
You've cleared Chapter One.
You've cleared Chapter Two.
You've cleared Chapter Three.
You've cleared Chapter Four.
You can now use members of Naruto's generation.
You can now use Kakashi, Yamato, Guy and Asuma.
You can now use Gaara, Kankuro, Temari and Chiyo.
You can now use Sasuke, Suigetsu, Karin and Jugo.
You've acquired S Rank in "The Bell-Stealing Drill".
You've acquired S Rank in "Sand and Art Blast".
You've acquired S Rank in "Sakura Dances".
You've acquired S Rank in "Forbidden Fury".
You've acquired S Rank in "Showdown Between Best Friends".
You've acquired S Rank in "Sturm und Drang".
You've picked up 500 items.
Edited a Ninja Info Card.
You've acquired all trophies.
You've acquired all titles.
You've won 10 times in online Ranked Match battles.
Your total play time is over 30 hours.
You've won 1 time in online Ranked Match battles.
You've acquired all Ninja Info Cards.
You've saved up 999999 Storm Points.
You've cleared all events.
You've cleared all requests.
You've acquired all battle items.
You've seen all secret factors.
You've seen friendship events for everyone.
You've cleared all correspondence events.
You've collected all collection items.
Saved up 999999 Ryo.
You've cleared the 10 trials.
Collected 100% of the stories.
You've retrieved all cursed dolls.
You've cleared Fragment.
You can now use all characters.
You can now use Lars.
You've gained 50 titles.
You've retrieved all Tonton's pearls.
You've seen all memories.
You've collected all messenger birds.
You can now use all members of the Akatsuki.
You've cleared Final Chapter.
You've acquired S Rank in "Earth Shatter".
You've cleared Chapter Six.
You've acquired S Rank in "Battle Between the Sage God".
You can now use Jiraiya, Tsunade and Orochimaru.
You've cleared Chapter Five.
You've acquired S Rank in "The Two Uchiha".