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