Return 0: The Cult (2)

After the opening narration (a short video that plays automatically), you gain control of an overweight, naked man emerging from a lake in Cauldron Lake.

Walk forward and you will see the lights of some hikers on top of a hill.

Follow the path to the right deeper into the forest.

Continue up the slope until you reach a clearing.

Jog (press L3, the left analog stick, and click it) along the path and up another slope.

As you pass an abandoned shelter on your left, you will see some lights in the distance.

Start making your way towards them and some sinister figures in deer masks will emerge from the shadows.

The figures, proclaiming themselves to be the Cult of the Tree, grab hold of you and tie you to an altar.

In the ensuing scenes (cutscenes), the cultists cut the unknown man's heart out but flee when they are disturbed by the hikers.