Chapter 3 starts right before you enter the Roanoke. It also starts right after the jet scene in space.
his is just a recap of chapter2/3 again to be complete.
To The Roanoke
After the mine flying scene, head towards marker and go inside the door. From here it will be just following door to door, taking out enemies until we reach the control room.
This can be a little hard, especially battle wise.
First bring down the generator using kinesis. Then use kinesis on the circle and spin it until complete.
This will bring out a nasty wave of enemies. Take them all out. After they are gone do the same thing we did to the first generator on the next 2.
Once they are all in place, activate the central computer. We will now have power back. More enemies will appear though, so be aware.
Finally follow marker to the elevator. Then go up the elevator and meet up with the rest of the crew.