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