On the B bomb site there is a truck. What you can do is boost 2 people onto that truck and plant B. These two people can begin runboosting on the white container on the truck onto the open window pane. (Not hard to miss) Then you re able to see through the sort of loading bay and jump onto a section of it. You are basically invincible in this spot
Imgur tutorial [imgur.com]


In CT spawn there is a balcony with some boxes and stuff underneath, have 2 people on then boost one of them onto the balcony ledge. Then jump into it. I believe if it's intentional will encourage CT camping!
Imgur tutorial [imgur.com]

There are some smaller glitches too, if you want to know all of them I got so far add me on Skype: PrimedMissile