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