Hey, it's a Double Date! You know, it's saying something about the franchise that I really don't mind that Epic did something like this.
Go through the double doors and out the back of the building. When you get to the intersection, there's Gnasher ammo to the left but otherwise, go right. Continue on until you come to a pipeline section that's been rigged. The motion sensor will be triggered and then you'll have to turn it off. Quick Time Event! Just kidding! You just need to hit the X button to turn it off. This part is rather linear so just keep going and you'll trigger another sensor. Shut that off and then make your way to a little clearing. Head through the gate the just shuttered and on the left, through the window is some ammo. Head back out and go up the hill. You'll trigger another bomb so turn that off.
Then get shot at! After you deal with him, you'll find yourself in a room with ammo on the left and a loft area to the right. Go to the loft and if you go down the stairs you'll find a scorcher. In the corner by the scorcher where the rail meets the wall, find a Panicked Note. Head back upstairs and follow that guy. Up the stairs and through the small open area, you'll find a barricaded building. After you wonder how the guy got inside there himself, break the barricade and then head right. You'll pass through a back room, behind a counter and out behind the building to find COG tags in a pool of blood.
Backtrack and go through the hole in the wall to the left. Eventually you'll walk into the sewers and have a couple of cutscenes. Then you'll be introduced to an interesting new enemy. They're rather frail melee enemies but they move pretty fast and can be surprisingly hard to hit. More interesting is what you hear if you listen to them groan. Anyway, pretty much anything works but you could easily stick with your lancer and you'll have more ammo at the end.
Go through the sewers and let them break down the wall. Inside the room is a wheel to turn and lower the draw bridge. Go up that and open the door. Once outside, go up the stairs to the plaza. Pass the empty fountain and you'll be attacked as you approach the building. On the front porch is a Vulcan Cannon for you. Use that to clear out the enemies then turn around and climb that ladder. At the top, turn left and at the end of the hallway is a collectable.
*cutscene*
