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