Chapter 13: “Reach for the Sky” is action packed, but low on collectibles. Only one artifact can be found here and no text or audio logs.
Here’s a quick screenshot guide on how to find the only artifact in this chapter.
S.C.A.F. Artifact 14
After you lower the cage to your friends you will get to some caves called “Frozen Encampments”. Inside the caves you will get to a split in the road and going left you will find the artifact. This crossroads comes after you fight those “suicide bomber” necromorphs with yellow explosive sacks.