Full list of all 38 Mark of the Ninja achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 30 achievements, and there is 1 DLC pack containing 8 achievements.
Complete a level without killing any guards.
Complete a level without killing any guards and without being detected.
Complete a level without getting detected.
Complete the game in New Game Plus.
Terrify a guard and cause him to stumble to his death.
Terrify a guard using the result of a hanging stealth kill five times.
Perform five different types of stealth kills successfully in one level.
Kill a guard from inside the box.
Determine your fate.
Escape from the Stronghold.
Distract 25 guards using environmental objects.
Assassinate Karajan.
Terrorize 10 guards.
Stealth kill an elite guard after stunning him.
Assassinate Kelly, the mercenary captain.
Use a dead body to lure another guard and then stealth kill them.
Kill a guard by getting other guards to shoot them.
Throw the body of one guard to terrorize another.
Perform 25 successful stealth kills.
Save Azai from the mercenaries.
Kill one guard.
Earn three stars in every level.
Earn all the Seals in every level.
Find all three scrolls in every level.
Earn all the upgrades.
Complete all of the challenge rooms.
Distract 25 guards using your equipment.
Get the Undetected honor bonus 10 times in one level.
Within a single Focus, aim and throw three different types of items.
Stealth kill a guard from inside a dumpster.
Dispatch two enemies at once using a body infected with Toxic Fungus.
Complete the new Special Edition level.
Knock out an enemy again that was revived from being knocked out.
View any of the developer commentaries.
Stun an elite guard with moths then dispatch him.
Complete one of the original Mark of the Ninja levels using the Path of Wisdom.
Read one of the history lesson developer commentaries.
Disable a spotlight using the Dusk Moths.