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