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