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