The Galaxy is safe...Again.
Complete Sector 7.
Complete Sector 6
Complete Sector 5.
Complete Sector 4.
Complete Sector 3.
Complete Sector 2.
Compete Sector 1.
Obtain a score of at least 20000 in Clashzone.
Obtain a high score of 20000 in any arena.
Find the black belt in Inverse Ninja Law.
Complete the treasure hunt.
Watch the after credits cutscene.
Watch the credits.