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