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.
Complete all of the challenge rooms.
Earn three stars in every level.
Earn all three seals in every level.
Earn all of the upgrades.
Find all three scrolls in every level.
Complete the game in New Game Plus.
Within a single Focus, aim and throw three different types of items.
Terrify a guard and cause him to stumble to his death.
Complete one of the original Mark of the Ninja levels using the Path of Wisdom.
Knock out an enemy again that was revived from being knocked out.
Stealth kill a guard from inside a dumpster.
Stun an elite guard with moths then dispatch him.
Kill a guard from inside the box.
Read one of the history lesson developer commentaries.
Disable a spotlight using the Dusk Moths.
Terrify a guard with a hanging stealth kill five times.
Determine your fate.
Escape from the Stronghold.
Assassinate Karajan.
Stealth kill an elite guard after stunning him.
Dispatch two enemies at once using a body infected with Toxic Fungus.
Perform five different types of stealth kills in one level.
Distract 25 guards using your equipment.
Complete Dosan's Tale.
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 Kelly, the mercenary captain.
Terrorize 10 guards.
Use a dead body to lure another guard and then stealth kill him.
Kill a guard by getting other guards to shoot him.
Perform 25 successful stealth kills.
Throw the body of one guard to terrorize another.
Distract 25 guards using environmental objects.
Save Azai from the mercenaries.
Kill one guard.
View any of the developer commentaries.