The level begins with the Marine standing unnoticed near an indoor fall-to-death shaft. On either side, there are Civil Security Lites who reside outside of the small building. The player will typically choose to shoot the Lite on the left, armed with a Grenade Launcher. There is a roof above the Marine's head that contains more enemies, who will take notice when another dies. Enemy Civil Security begin to rush the Marine with Rocket Launchers. This part is very dangerous, as there is only a small guard on the left. The Marine can easily be thrown out of the map by a rocket. Once the initial section has been cleared, the Marine gets behind a few walls and falling to death is no longer a safety concern. There is another base, full of enemies with Railguns that can present a hazard to the Marine if not dealt with quickly. After completing this section, the Marine comes across an outdoor base area with 2 remaining enemies. There is a death shaft that will kill the player if they fall in, but it can also be used to eliminate the enemies. After jumping over the final death shaft, the player reaches the level end area.