Here is the full list of all 38 Mark of the Ninja: Remastered achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Complete the game in New Game Plus.
Stun an elite guard with moths then dispatch him.
Disable a spotlight using the Dusk Moths.
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 Dosan's Tale.
Stealth kill a guard from inside a dumpster.
Read one of the history lesson developer commentaries.
Terrify a guard and cause him to stumble to his death.
View any of the developer commentaries.
Kill a guard from inside the box.
Within a single Focus, aim and throw three different types of items.
Knock out an enemy again that was revived from being knocked out.
Earn all of the upgrades.
Earn three stars in every level.
Earn all three seals in every level.
Determine your fate.
Find all three scrolls in every level.
Complete all of the challenge rooms.
Escape from the Stronghold.
Assassinate Karajan.
Throw the body of one guard to terrorize another.
Stealth kill an elite guard after stunning him.
Distract 25 guards using your equipment.
Terrorize 10 guards.
Perform five different types of stealth kills in one level.
Use a dead body to lure another guard and then stealth kill him.
Assassinate Kelly, the mercenary captain.
Kill a guard by getting other guards to shoot him.
Perform 25 successful stealth kills.
Terrify a guard with a hanging stealth kill five times.
Complete a level without killing any guards and without being detected.
Complete a level without getting detected.
Get the Undetected bonus 10 times in one level.
Complete a level without killing any guards.
Distract 25 guards using environmental objects.
Save Azai from the mercenaries.
Kill one guard.