. At the start of the chapter, be aware of a bunch of necromorphs you will have
to kill in order to begin searching for the pieces of Rosetta.
. Markers will lead you to all the pieces of the rosetta. Although there were some
problems I found along the way.
The gas room
. When you return to the room with the gas for the 2nd time. Your going to have
to power it on yourself. Then run back to the safe room and close the door quickly.
For some reason I died several times doing this, but it will work.
. It does not matter in which order you get the stones. Just be sure to get them all.
If the marker is not working, read the door labels and go to each sector. Make sure
to cover all ground possible.