Unlockables:
Characters
Gaara: Complete “Burning Will Of Fire” in Flashback Mission: Leaf Destruction Arc.
Itachi Uchiha: Complete “Fatal Encounter” in Flashback Mission: Tsunade Search Arc.
Jiraiya: Complete “A Match With Pervy Sage”.
Kabuto Yakushi: Complete “A Whirling Rasengan Explodes” in Flashback Mission: Tsunade Search Arc.
Kakashi Hatake: Complete the Genin Training Arc
Kankuro: Complete “The Aburame Clan” in Flashback Mission: Leaf Destruction Arc.
Kimimaro: Complete “Battle With The Sound Begins” in Flashback Mission: Sasuke Chase Arc.
Kimimaro (Curse Marked Second State): Complete “A Duel That Risks Their Bond” in Flashback Mission: Sasuke Chase Arc.
Kisame Hoshigaki: Complete “Toad Sage Shows His Ability” in Flashback Mission: Tsunade Search Arc.
Might Guy: Complete “Odd Beast Battles a Scourge” in Flashback Mission: Tsunade Search Arc.
Might Guy (Eight Gates): Complete “A Duel That Risks Their Bond” in Flashback Mission: Sasuke Chase Arc.
Naruto Uzumaki (Nine-Tailed Fox): Complete “A Duel That Risks Their Bond” in Flashback Mission: Sasuke Chase Arc.
Orochimaru: Complete “Sannin Rock Heaven And Earth” in Flashback Mission: Tsunade Search Arc.
Rock Lee (Eight Gates): Complete “A Duel That Risks Their Bond” in Flashback Mission: Sasuke Chase Arc.
Sasuke Uchiha (Curse Marked Second State): Complete “A Duel That Risks Their Bond” in Flashback Mission: Sasuke Chase Arc.
Temari: Complete “The Chunin Exam Sleeper Pick” in Flashback Mission: Leaf Destruction Arc.
The Third Hokage: Complete “Unprecedented Mega Battle” in Flashback Mission: Leaf Destruction Arc.
Tsunade: Complete “Tsunade Finally Opens Her Eyes” in Flashback Mission: Tsunade Search Arc.
Costumes
Gaara’s later costume: Complete “Gaara Returns” in Flashback Mission: Sasuke Chase Arc.
Kankuro’s later costume: Complete “Gaara Returns” in Flashback Mission: Sasuke Chase Arc.
Sasuke Uchiha’s black costume: Complete “Sasuke and Gaara” in Flashback Mission: Leaf Destruction Arc.
Shikamaru Nara’s Chunin costume: Complete “Shikamaru’s Squad is summoned” in Flashback Mission: Sasuke Chase Arc.
Temari’s later costume: Complete “Gaara Returns” in Flashback Mission: Sasuke Chase Arc.