I didn't make it!
Im stuck in the nexus building with barney, the room full of all the lasers and the turrets that blow you to hell in about half a second. i found the button by the big door that i THOUGHT was supposed to turn off the turrets and let me out, but when i try to press it, nothing happens. i have died about 200 times in this room, and its getting really old, so can someone please please please please help me? -weaz
well look around u need to jump on the vents and book shelves to get over them then at the other end is both ammo and a switch that will get you thro to the other side.
What i did was exited that room, turned right, used the gravity gun to pull that steel table from behind the trip laser. from there i pulled it into the room, (quick save here cuz u dont wanna be pulling the table in every time u die). from there jump over the lower laser and navigate your way through from there.