Escape to this elevator with Bella and O'Neal in A:CM
"Escape to the elevator with Bella and O'Neal" is a mission objective in the game Aliens: Colonial Marines
Powering all those consoles and accessing the Personnel Manifest grabbed Weyland-Yutani's attention and they are sending troops to the Weyland-Yutani Facility. You must escape to the elevator
Bella will open another door. Go through it, then down some stairs, then make it to an area with a lot of Weyland-Yutani Shipping Containers, there you will fight many enemies both W-Ys and Xenos.
Eventually you will see a big dome-like structure, continue going and reach the Elevator to complete the mission.