| Achievement | How to unlock
|
|---|
| 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 in one level.
|
| Days Long Past | Complete Dosan's Tale.
|
| 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 with 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 of 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 three seals in every level.
|
| Snare | Use a dead body to lure another guard and then stealth kill him.
|
| 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 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 him.
|
| 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.
|