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