Possible:

Find Super Computer

Protect Candice

Get NOC List

Escape

Impossible:

Same
                    
                   Grab the ammo on the boxes and kill the guard when
                   Candice opens the door. Go down and turn left into
                   the sewage control. Take the platform to the control
                   board, kill the guard, and pound some keys. Go back
                   on the platform and kill the guard attacking Candice.
                   Turn around and shoot the other guard.

                   Step onto the other platform and turn left. There is a
                   guard there, shoot him. Open the door and kill
                   another guard. Pound the keys and turn around. Go to
                   the end of the hall and turn right. Kill the guard,
                   there's some more ammo on the boxes. Head to the
                   door, open it, and kill the guard. Get the ammo on
                   the desk and pound some more keys.

                   You've got to get back to the start in a hurry. Stop at
                   every turn, because you have to wait for Candice.
                   When she catches up, keep going, then stop again.
                   When you get off the platform, turn left and enter the
                   new door. Kill the guards in there. There will be
                   another guard near the start. Go up to the computer
                   and wait for Candice. Then just go back to the
                   entrance. Another guard may attack Candice.

                   Tips: When Candice tells you to wait up, you're
                   going too fast. Backtrack and wait until she reaches
                   you.