You have just defeated the two goat legged bad asses of the Phobos Anomaly. As the walls crumble down before you, you see a huge teleporter down below. Quickly you rush to the elevator from which you came from and go down outside.

When you get to the building you hit the switch to rise the stairs that lead to the weird looking teleporter with some disgusting looking monster on it. You realize that this must be one of the Gates on Phobos. You've heard many stories of how the gates messed people up, making them into freaks, and you really don't feel like being transformed into one. Even if you were O.K. from the trip, what could possibly await you on the other side? After fighting those two ass ugly over grown goats you don't even want to imagine what you would see there. You decide to look for another way out of that place.

After a few minutes of searching you've found a well camouflaged door. It is really repulsive, and small, which is a good thing since no monster you have faced so far would be able to fit in there, how much luck can a guy like you have? Completely thrilled you try to get it to budge open, but it wont go, just what you need... Furiously you take out your rocket launcher, stand back, and pull the trigger.

The door is blown away into little bits, all you have to do is wipe the blood from your ears, scoop away some rocks from the explosion and crawl to god knows where. Not so bad considering what could happen to you if you went in through the gate. What really sucks is that you can't take your back pack with you since it won't fit, all you can carry is a pistol and 50 bullets (dejavu?). So you slowly get on your knees, get into the damp, pitch black tunnel and start too crawl.

You've probably spend more hours crawling than you have killing monsters. You wonder if you should turn back. If the tunnel was wide enough for you to turn around you probably would, but since it isn't you won't, on and on you crawl for what seems to be a eternity.

Finally you notice a light after you turn the corner. Are you dead? is it one of those lights that lead to Jesus? Who knows, and who cares!? As long as you're able to stand up or better yet sit down, you're happy. You rush towards the end of the tunnel, jump up with delight, get light headed, sit back down, and realize you're at a small train station. You're in luck, there's one train cart there, without thinking you hop on in, and activate it.

After about five hours of traveling the cart pulls over into what looks to be another base. Just like the one you just cleaned out but bigger, more gruesome, and on the south side of the moon. How you wish you have went into the gate. What's the worst thing that could happened to you? Not like you were going to be teleported into a dark room with hundreds of monsters around you and die there. But now you can’t you’re stuck, unless the train cart can go reverse!

Filled with hope you run up to the cart, check if it can go backwards, and start cursing at it. Well, there's only one thing you can do now, go into the base, clean it out, find another Gate like the one on Phobos Anomaly, and go into it. What have you gotten yourself into?...