Awakened
Save Azai from the mercenaries.
Back to Bed With You
Knock out an enemy again that was revived from being knocked out.
Behind the Curtain
View any of the developer commentaries.
Cordyceps
Dispatch two enemies at once using a body infected with Toxic Fungus.
Couldn't Do That Before
Disable a spotlight using the Dusk Moths.
Crimson Haiku
Perform five different types of stealth kills successfully in one level.
Days Long Past
Complete the new Special Edition level.
Deadly Shadows
Stealth kill a guard from inside a dumpster.
Descendent of Iga
Earn three stars in every level.
Escape
Escape from the Stronghold.
Fated
Determine your fate.
Gallows
Terrify a guard using the result of a hanging stealth kill five times.
Ghost
Complete a level without killing any guards and without being detected.
Haiku
Find all three scrolls in every level.
Hisomu's Heir
Kill one guard.
Inner Heaven
Kill a guard from inside the box.
Karajan's Fate
Assassinate Karajan.
Manipulator
Distract 25 guards using your equipment.
Marked
Earn all the upgrades.
Masterful
Complete a level without getting detected.
Mercy
Complete a level without killing any guards.
No One Lives Forever
Stealth kill an elite guard after stunning him.
Of The Mind
Complete all of the challenge rooms.
Oni
Terrorize 10 guards.
Perfection
Earn all the Seals in every level.
Snare
Use a dead body to lure another guard and then stealth kill them.
Stealth Assassin
Perform 25 successful stealth kills.
Tactical Espionage Action
Within a single Focus, aim and throw three different types of items.
The Dark Project
Get the Undetected honor bonus 10 times in one level.
The Humble Moth
Stun an elite guard with moths then dispatch him.
The Mercenary
Assassinate Kelly, the mercenary captain.
The Worst Allies
Kill a guard by getting other guards to shoot them.
Things Better Left Unseen
Throw the body of one guard to terrorize another.
Trickster
Distract 25 guards using environmental objects.
True Ninja
Complete the game in New Game Plus.
Unstable Footing
Terrify a guard and cause him to stumble to his death.
Well, I Think It's Interesting
Read one of the history lesson developer commentaries.
What Could Have Been
Complete one of the original Mark of the Ninja levels using the Path of Wisdom.