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