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