Defeated the "Great Serpent".

Used the Mortal Blade to sever the Guardian Ape's undying

Find Mike Toreno without any of the referenced locations during "Mike Toreno".

Defeated the "Guardian Ape"

Grasped the inner mysteries of any combat style

Defeated "Lady Butterfly"

Encountered the Memorial Mob

Acquired the Shinobi Prosthetic

Complete "The Green Sabre".

Stealth kill all enemies in the mission "Madd Dogg's Rhymes".

Finish the tutorial.

Use a Pay 'n' Spray with wanted level.