METAL GEAR RISING: REVENGEANCE
60 Achievements
60-80h
GOG
Assassin Behind Closed Doors
Successfully complete 30 Ninja Kills during story mode.
12.7%
How to unlock the Assassin Behind Closed Doors achievement in METAL GEAR RISING: REVENGEANCE - Definitive Guide
LookItsPineappl
TrueAchievements
TrueAchievements
Just to clarify this, Ninja Kills boils down to "Stealth Kills". If they don't see you coming, it counts as a Ninja Kill. I would imagine this stacks on subsequent playthroughs but can't confirm that, I got it just progressing through the main story the first time.
Kagerasimaru, Kheapathic
This trophy is very simple, a ninja kill is when you press 
behind an enemy who doesn't see you and kill them. There are many places in the game that allow you to sneak up on enemies to perform these attacks. You can also use AR mode to watch their movements through walls, use the hologram to distract them, and use the cardboard box or drum to hide from an enemy as he passes by. Simply get 30 Ninja Kills across multiple playthroughs to earn this trophy.
behind an enemy who doesn't see you and kill them. There are many places in the game that allow you to sneak up on enemies to perform these attacks. You can also use AR mode to watch their movements through walls, use the hologram to distract them, and use the cardboard box or drum to hide from an enemy as he passes by. Simply get 30 Ninja Kills across multiple playthroughs to earn this trophy.
tehapoc
"Ninja Kills" are simply stealth kills on an enemy. If you kill an enemy while they're not alert, it should count towards this. Most effective way to earn this is to sneak up behind an enemy and hit the 
. Also, if you hold down the 
button, you can also execute a Zandatsu.
H3ROIN
stratege.ru
stratege.ru
This guide was translated automatically. Show original
Ninja Kills - these are silent kills - come from behind or from above the target and press 
this way you can kill enemies of almost any size except bosses and local battles when you are noticed by default
this way you can kill enemies of almost any size except bosses and local battles when you are noticed by default
Hitman090
stratege.ru
stratege.ru
This guide was translated automatically. Show original
If you didn’t manage to get it on the first playthrough, then don’t worry, you’ll get it on the 2nd or 3rd playthrough, since it’s cumulative.