Two other things about that vid that seem off after watching more play throughs just now of the same level.
http://www.youtube.com/watch?v=y8DzM3Nh7Ec&t=18m18s
1.) the part where a bunch of them are standing there shouldn't happen at all. Moment you see them it should trigger a sequence where they disperse to search the area. So what he showed in the vid was a glitch.
2.) If you click the link above, you'll see the field of vision for enemies is extremely sensitive. They can see you even in their peripheral vision. The indicator goes off when they walk passed you even if you're hidden. So not sure what the guy in the vid is on about.
http://www.youtube.com/watch?v=y8DzM3Nh7Ec&t=18m18s
1.) the part where a bunch of them are standing there shouldn't happen at all. Moment you see them it should trigger a sequence where they disperse to search the area. So what he showed in the vid was a glitch.
2.) If you click the link above, you'll see the field of vision for enemies is extremely sensitive. They can see you even in their peripheral vision. The indicator goes off when they walk passed you even if you're hidden. So not sure what the guy in the vid is on about.