Tom Clancy's Rainbow Six: Vegas/Glitches

Streets
Go into the bravo team spawn and go up the stairs, There will be a table lying diagonally at the left window, If you use the to hug the table on the left side and look around to the left you will be able to shoot out a the enemy left window without them being able to shoot back at you.

From the alpha spawn head into the left building and go to the top floor. Head to the open area closest to the bravo spawn, there will be a box there, Throw motion sensors at the left side (looking towards bravo spawn) and place about 25 of them on top of each other (your game should then lag slightly). Run along the red line and you should land on the box, Follow the wall to the left and slowly walk around the rappel, You should then see a fence with barbed wire, "Jump" onto the thicker part of the fence (this may take a few attempts) and follow the bar forwards and you'll be off the map (to see something interesting head to your left).

LVU Campus
Go to the roof of the LVU Campus. There should be a box to the top left when you come in from the staircase doors. Use the to hug the right side of the box and hold. If done correctly, you should now be on top of the box (you can now aim at both bridges and windows from here). You can have another player stand between the box and the closest edge of the roof. Walk over them and onto the edge of the roof. You can now see over the outside of the campus and more into there base. You can then walk along to the front office and walk across the black beam around the edge and land on top of the cat walk (if you step into Grey area your stuck).