Full list of all 38 Mark of the Ninja achievements worth 500 gamerscore. It takes around 10-12 hours to unlock all of the achievements in the base game.
The base game contains 30 achievements worth 400 Gamerscore, and there is 1 DLC pack containing 8 achievements worth 100 Gamerscore.
Complete the game in New Game Plus.
Earn three stars in every level.
Find all three scrolls in every level.
Complete all of the challenge rooms.
Earn all the upgrades.
Earn all the Seals in every level.
Terrify a guard using the result of a hanging stealth kill five times.
Kill a guard from inside the box.
Determine your fate.
Escape from the Stronghold.
Complete a level without killing any guards.
Complete a level without killing any guards and without being detected.
Assassinate Karajan.
Distract 25 guards using your equipment.
Throw the body of one guard to terrorize another.
Stealth kill an elite guard after stunning him.
Terrify a guard and cause him to stumble to his death.
Terrorize 10 guards.
Stealth kill a guard from inside a dumpster.
Assassinate Kelly, the mercenary captain.
Perform five different types of stealth kills successfully in one level.
Use a dead body to lure another guard and then stealth kill them.
Kill a guard by getting other guards to shoot them.
Within a single Focus, aim and throw three different types of items.
Get the Undetected honor bonus 10 times in one level.
Distract 25 guards using environmental objects.
Perform 25 successful stealth kills.
Complete a level without getting detected.
Save Azai from the mercenaries.
Kill one guard.
Complete one of the original Mark of the Ninja levels using the Path of Wisdom.
Disable a spotlight using the Dusk Moths.
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 the new Special Edition level.
Knock out an enemy again that was revived from being knocked out.
View any of the developer commentaries.