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