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