Geothermal Valley - Entering the Occupied Village (Part 2)

When the man on the far left moves away, move back through the bushes to the left side of the clearing, near where you came in.

Advance into the bushes near the large boulder but no farther.

When the man on the left moves away from both Lara and the other enemies (i.e., yellow in Survival Instinct and facing away from you) take him out with another headshot.

Now throw a can/bottle, or shoot an arrow at the cabin on the left.

This should cause one of the 2 men near the fire to investigate.

You can then kill him with another headshot.

Take out his companion the same way.

There's one more enemy inside the cabin on the west side of the clearing. Rather than going straight up the stairs to confront him, enter this building through the little opening on the lower left.

Then sneak up behind him and press Y/F to use a stealth takedown.

Loot his body and then look on the floor near where he fell to find a document (21/33), Attachments from the Conspiracy Theories series.