Fade to Silence

This achievement comes very early on in the game, once you have cleansed the refuge crystal you are tasked with gathering resources from the wilderness, as you leave the refuge the first area is The Flats.

The achievement popped as I walked down the slight ramp from the refuge.

If you are playing co-op, this achievement is host only.

For anyone who plays this on coop, the person that joins the host will not get the achievement for discovering the Flats when found.