I will put something that I've saw playing yesterday and today.
+ the pace of walking doesn't match at all the distance moved.
+ If you are trying to scale something
The idea of peripheral vision can be very fun in dungeons, all party behind an elite mob!
Regarding the distance I remember a game, Comandos, where the npcs has a peripheral vision of two typ
Should be something very lightweight, they have to move very quick. Should be something between cloth and leather. Maybe you can choose one of them and got bonus, such as
will be more immersive if there are some kind of reputation associated with the npc then they answer you more smart if exalted.