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Once you get inside, the entire time you'll get swarmed by Elite Therons that are on the floor with you and shooting from different rooms that line this area. There are five you need to get on 3 different floors in the middle area. Shutting off the generators did nothing, so now you'll have to shut off coolant values. Don't let a little bit of fire stop you, so pull the easy to find switches, then go inside the office at the other side of the generator room for a cut scene. It has three switches that you need to pull, and along the way a Flame Grenadier and some Wretches will attack. At the end of the whole thing is the generator room.
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This close quarter's hall will spawn 3 Elite Theron and 3 Flame Grenadiers: Two Flame Grenadiers and a Theron will be down this first part, while the rest are around the corner down the hall. Go in the room from wince he came to activate a cut scene. Whenever they die, a door will open and a Flame Grenadier will also go after you. Inside once the lift stops, a Theron or two will attack. The Armored Kantus can't do much at all far range with two gorgon pistols on Normal (he sure as hell can on Insane!). Make sure Shriekers are first priority, follow by the Therons and finally the Kantus. But will the Locust let you in if they have anything to say about it? Nope! At the front steps are an Armored Kantus, a few Shriekers and a few Therons. Around this U-turn after the Reaver fight, up ahead is finally the Maelstrom Facility. Pick up one of the Torque Bow weapons also. The best position to fight it is back on the heliport where the first one was. Whenever the Therons are dead, another Reaver will land near you. This area is also dark, so it can be kind of hard to see some of them if you have a low resolution TV. Take him out with your Lancer or Torque, the move on to find more Elite Therons waiting for you carrying Lancers and Torque Bows. When you go outside, a Reaver will drop down on the helipad in front of you. Climb the ladders up into a warehouse of sorts.
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When you fight the 3 Elites going upstairs, this is where the Silverback fun ends. The #1 path is the way out, but the other paths offer some hidden goodies. They'll come at you from all four directions, so never turn your back on one direction for long. Down the hallway with the number 1 on the wall, a wretch will notice you, and then his little wretch buddies will attack you along with a Flame Grenadier. Going up the lift at the beginning of the chapter, it will suddenly stop at one of the open floors.
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