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