First off, you are gonna find yourself in the elevator you exited the last level in. Feel free to explore the cavern you end up in, collecting weapons and ammo, along with a human whose soul you can collect. Shortly after the message you receive, there will be a number of Forgottens that will attack you. Destroy them, and head on up the stairs to the next room.

In this area, many wraiths and one trite will attack you. After they are dead, just keep going up the stairs and fight yet more wraiths. Keep going down the hall killing the wraiths on the way, until you come to a door. Immediately to the door's other side, is a PDA of a man named Stewart Jackson. Now you are gonna need the artifact to get through all those bluish-green death balls going back and forth. Activate the artifact, and slip on through. Continue through the hallway straight ahead. You will find a cavern with a building on the other side, you will quickly be attacked by a Vulgar. Soon after killing him, feel free to explore the room for health and ammo pickups. Then go inside the building, and fight some z-sec zombies mixed with some Vulgars. Go up the stairs to your right and find the elevator in the area, and go to the level above. You will fight two z-sec zombies, and a locker, which combination you will later find in a PDA. Continue to the next area, with z-sec zombies scattered on the way. Go through the door ahead of you, you will kill a few zombies, and in the next room, will find a guy who turns into a zombie before your eyes, kill him before he has the chance to attack, and download his PDA. Don’t forget to take the power cell out of the generator either. Retrace your steps all the way back to the elevator, and along the way go to the locker and enter the code ‘769’, and go back to the elevator to the lower level. Once the doors open, there will be a camping Vulgar waiting for you. After he is dead, go through the door and go to the access panel, which you will now be able to bypass. You will straight off find a PDA of Steven Crane, which has a combination to a locker in the upcoming area.

Go to the door to your left, and fight a number of zombies, go to the left in the office area, climb up the ladder, and go through the area killing random zombies, you will come into a room, with two small offices behind glass. Go in the one to your left, and find a nice little arcade game, much like super turbo turkey puncher 3. Enter the code ‘428’ and collect the super shotgun and key inside the locker. The door at the end of the hallway can now be accessed. Go through it into a room. Look to your left to find a power cell generator. Remove the power cell. Many zombies will soon ambush you. Kill em’ off, and retrace your steps all the way back to the ladder. in the middle of your way back, your vision will turn all red. Followed by about ten zombies. Finally go back down the ladder you came in, and through the door. Now, go to the artifact control room straight ahead of you.

You will quickly be greeted by a number of Vulgars. Go down the hallway, which has a window to the right side. Go through the door ahead of you, and to your right insert the two power cells into the generator that are in your inventory. Go to the access panel on your left and click on 'vent gas'. The room should clean out pretty quickly. Watch behind you as two soldiers will try to ambush you while the gas is venting. Retrace your steps through the hall again. Now you will come to the room that leads 3 ways again. Take a left through the door, once you are in the next room, look to your left to find a door that says "artifact storage" above it. Go through the door, which leads to the room that you just vented out. Now download 'Victor Kharkov's' PDA, and take a left to the access panel, you should automatically get a new inventory item just by walking up to it. You are now given a new objective to find Dr. Cloud.

Many Vulgars will quickly ambush you. Kill them off and head into the door straight across the steps, where zombies will come out at you. Keep heading through the hall and to the next room. There should be a large door with an access panel to the side saying "open Bay door". Click on it. Inside the bay there should be an access panel exit to Erebus Control.