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