You can now use members of Naruto's generation.

You've cleared Chapter One.

You can now use Gaara, Kankuro, Temari and Chiyo.

You've acquired S Rank in "The Bell-Stealing Drill".

Achieve a very, very low score

Earn 1 star in Special Ops.

Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.

Assault Makarov's safe house.

Execute the plan to help the Americans.

Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.

Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.

Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.