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