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