Doomgiver - Detention Area stuck
I am on the Doomgiver - Detention Area level. In the area with the multiple turrets, I am stuck. I have opened the two other doors and tried to use the lifts at the end of the hallways, but they do not activate. I can only use the lift that I originally came down. I have killed off everything in this section. What else do I have to do to get the other lifts to activate? Thanks.