Quote: Originally Posted by
marranello729 
This is an old glitch basically you go to the horseshoe, (the beginning nearest to suicide hallway), you go to the wall where there is a glass pane directly above, you crouch and then let go and go up. this will get you from the vault to the security offices quickly and with some stealth to it. I use this technique to get lots of unexpected kills.
I'm confused, where is the horseshoe?