This is just right next to the base operation. On the front door, watch out because they are blowing up the door that damage your health. Thats what happen on my gameplay XD. First location, secure the lobby. Hostile are near escalator and some are coming from the second level. Second location, patch faye into the security system. Follow the blinking icon then use the computer for surveillance camera. Third location, rescue Dr. Kendel. Hostile are coming from the other end. Once you clear the first location go up using the elevator and Dr. kendel is there. Fourth location, protect Dr. Kendel. Hostile will be coming on other end so counter that, make sure that Dr. kendel not going to die. Fifth location, Secure the roof. This is a boss fight, Clear first the normal hostile so that you can focus on boss.