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.
Earn three stars in every level.
Find all three scrolls in every level.
Earn all the Seals in every level.
Earn all the upgrades.
Complete all of the challenge rooms.
Kill a guard from inside the box.
Determine your fate.
Escape from the Stronghold.
Terrify a guard and cause him to stumble to his death.
Get the Undetected honor bonus 10 times in one level.
Assassinate Karajan.
Stealth kill an elite guard after stunning him.
Distract 25 guards using your equipment.
Perform five different types of stealth kills successfully in one level.
Stealth kill a guard from inside a dumpster.
Complete a level without killing any guards.
Complete a level without killing any guards and without being detected.
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.
Assassinate Kelly, the mercenary captain.
Within a single Focus, aim and throw three different types of items.
Kill a guard by getting other guards to shoot them.
Throw the body of one guard to terrorize another.
Complete a level without getting detected.
Distract 25 guards using environmental objects.
Perform 25 successful stealth kills.
Save Azai from the mercenaries.
Kill one guard.
Read one of the history lesson developer commentaries.
View any of the 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.