Dead Space 2 Walkthrough - Chapter 7: Part 2
33Full Walkthrough: http://www.gamefront.com/dead-space-2-walkthrough/
Hack the nearby panel to restore energy to the lift. Wait a few seconds — you'll be ambushed by necromorphs in succession, but you can use the nearby Stasis canisters (or Stasis of your own, since there's a nearby refill station) to make taking them out easily.
Once that's done, look up to the right if you're facing the lift and the door you came in through. There's a piece of metal you can move into the wall using Kinesis, and a bridge you can pull down with Kinesis as well. Do both, then ride the elevator up to the second level, where you'll find a Bench.
Be careful as you board the elevator — a necromorph will appear just behind you, and after you reach the second level, it'll pursue you through a nearby vent. Kill it, ignore the bench, and advance down the walkway slowly until you trigger another set of lasers.
Spin back and use the necro's body to clear the trap. Ahead on the right is a Save Point, and in a small alcove to the left is a set of lockers.
POWER NODE: Walk toward the lockers to trigger another laser; turn around and snag a tool box or similar object to clear the explosives. Check the right locker for the node.
Now you can hit the Bench, save and move on. In the next room, get your Stasis and heavy weapons ready — you've got two Stalkers to deal with. ANTI, the computer, purges life support as you enter, so you're on the clock, as well.
Only one of the two Stalkers has feet, so be careful not to get charged by it. The other crawls — kill them both and ignore loot for the moment. Head forward and you'll see a panel that can be hacked: once that's done, oxygen will be restored and you can wander around, picking up loot from the bodies and the wall panels in here. Then hit the door to the Computer Mainframe.
Kill the Mainframe
In order to access the mainframe, you'll need to mess with some hardware. Go to the middle of the room and enter the hatch there. Inside the room beyond, remove the panels from the wall and pull out all the fuses in the two left panels. Plug them into the right panel — they'll turn green when they're in the right positions.
Backtrack out and hit the button beside the hatch to rotate it to the other room. Crawl through and repeat the process, but be on your toes, as you'll have to fight a necro that comes charging through nearby vent. Once you've killed it, deactivate the mainframe security and head back to the hatch.
ACHIEVEMENT: There's a secret room you can access from here in order to access the Peng treasure and get the "Collect Peng" Achievement. To get it, plug the fuses into the panel in each room in the following order: the fuse with the plus pattern in the upper left corner; the fuse with what looks like two diamonds or a bowtie pattern in the upper right corner; the square-patterned fuse in the lower left corner; and the fuse with a sort of mushroom-shaped pattern in the lower right corner. In the first room, the fuses will remain red; in the second, they'll turn blue. Once you've set all the fuses correctly, you can access another hatch rerouter button in the left fuse room. Press it and it'll take you to a room with Peng on the floor in the back of it, with a bunch of loot as well.
POWER NODE: There's also a Power Node panel in the secret room.
Get your gun up when you leave the fuse rooms and deal with the two slashers charging you up the ramp when you come out of the hatch. At the bottom of the ramp, you'll see six pods come up that you can break to destroy the computer. Hit two with melee, then turn around — you'll need to kill a necromorph now, and again after the next two. Finish destroying the circuits and the door to the Array control panel will open.
ACHIEVEMENT: You get the "Shut Down" Achievement for destroying the AI.
Full Walkthrough: http://www.gamefront.com/dead-space-2-walkthrough/
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