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