It is very frustrating when you trying to escape a death, or trying to get the drop on the next guy but you seating there trying to get out through a window and it just not happening. Some of the larger windows you can easily jump your way out of. But the smaller ones specially on Overgrowth or the shotgun rooms on Eden or Empire you are as good as dead trying to make your way out from the inside through the windows. Seriously, if we can easily clamber in, getting out should be just as easy with clamber.
I agree. I believe that is how Overgrowth was intended to be played. Having the windows as an easy entrance and escape makes the hallway less of a deadlock. Still it is very possible to get out of those windows. Run a custom game and practice.
I have actually ran into this situation. It was so frustrating!