Use your searchlight and follow the corridor around to the right. Grab all the goodies that were hiding behind the force-field and drop down the shaft behind them. You'll be in the Mothership Lab, near your originai starting point.

Follow the passage to your right. Go on through the doors ahead until you reach the lift that goes from the Lab to the Core. Enter the Core and kill the Mercenary on the lift.

At the top, turn right and then left and go down the short stairs. On the left is an area containing a Skaarj and plenty of freebies. Follow the corridor back to a small chamber and head downstairs past the steep ramp to the lift. Head upstairs on it, turn left, shoot the Ice Skaarj to open the doors, go through, follow the passage to your right and activate the holographic console to gain authorisation to turn on the emergency power.