Here is the full list of all 50 Naruto Shippuden: Ultimate Ninja Storm 2 achievements worth 1,000 gamerscore.
You've unlocked all achievements.
You've acquired all titles.
You've acquired all Ninja Info Cards.
You've saved up 999999 Storm Points.
You've collected all collection items.
You've seen all memories.
You've cleared all events.
You've cleared all requests.
You've acquired all battle items.
Saved up 999999 Ryo.
You've cleared the 10 trials.
You've seen friendship events for everyone.
You've cleared all correspondence events.
You've retrieved all cursed dolls.
Collected 100% of the stories.
You've cleared Fragment.
You've collected all messenger birds.
You've retrieved all Tonton's pearls.
You've won 10 times in online Ranked Match battles.
You can now use all characters.
You can now use Lars.
You've gained 50 titles.
You've seen all secret factors.
You can now use all members of the Akatsuki.
You've cleared Final Chapter.
You've acquired S Rank in "Earth Shatter".
Your total play time is over 30 hours.
You've acquired S Rank in "Sturm und Drang".
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 won 1 time in online Ranked Match battles.
You've cleared Chapter Three.
You've acquired S Rank in "Forbidden Fury".
You've cleared Chapter Two.
You've acquired S Rank in "Showdown Between Best Friends".
You've acquired S Rank in "Sand and Art Blast".
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've picked up 500 items.
You can now use Gaara, Kankuro, Temari and Chiyo.
You've cleared the Prologue.
You've acquired S Rank in "The Bell-Stealing Drill".
Edited a Ninja Info Card.