Here is the full list of all 24 Chess Knights: Shinobi achievements.
Teleport yourself using a smokebomb
Complete your training
Hide from your enemies using the environment
Assassinate your first target successfully
Stand against a more powerful enemy
Use the height difference to be unseen
Assassinate your second target successfully
Alert an enemy about your presence
You shouldn't sound more alarms
Assassinate the shogun successfully
Burn the castle down
Complete 5 levels without losing any ninjas
Complete the hidden jigsaw
Collect the item from the first secret stage
Collect the item from the second secret stage
Collect the item from the third secret stage
Collect the item from the fourth secret stage
Collect the item from the fifth secret stage
Collect the item from sixth first secret stage
Collect the item from seventh first secret stage
Collect the item from the eighth secret stage
Collect the item from the ninth secret stage
Collect the item from the tenth secret stage
Complete the collection