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