During many of the games I've recently played where we've attempted to stealth through a bank heist, it has become apparent that the guards seemingly follow rigid paths that change as you kill off each guard.
Is it possible to perform any action (being seen for a certain amount of time, shooting at walls, etc) that will attract a single nearby guard away from his path so I can put a bullet in him?
Best Answer
You cannot directly "lure" the guards (and I think it's a great new skill idea, by the way): just like civilians, they are locked in a pretty basic pathfinding. Even a guy carrying a grenade-launcher and a giant sport bag, a body armor and some gagball mask popping in a corner won't make them move.
Source: Stealth by Morriperkele | deviantART
That being, on some maps, you can use some of the interactive items to attract them
Bank
You can break cameras without being noticed (my advice is to hit them from their blind spot with your melee attack). The guards will be notified that something's wrong with one of the cameras and, eventually, one of them will come to check it up. So you can simply break a camera and hide around it, wait for a guard to pass on, and kill him before he reports the broken camera.
Framing frame
On day 1, you can lure the guards into the toilet by activating the hand dryer. If the guard is in hearing range, he will go into the toilet to investigate.