Complete the Ninja Academy.
Unlock a new ninja.
Create & start an online match with three other people in it.
Win a round in Objectives in online match.
Get 1000 score in a single Deathmatch online match.
Fully upgrade a Super Ability
Complete all Ninja Trials.
Win a four-player Deathmatch online match.
Win a four-player Objectives online match.
Reach rank 30.
Die 20 times in a single online match.
Explode the rocket.