This video shows a series of clips from a video game. The player is holding a gun and is walking through a dark cave. The cave is filled with rocks and boulders. The player is moving forward and shooting at enemies that appear in front of them. The gun has a red dot sight and a green and yellow light on it. The player is also wearing a helmet with a red light on it. The video is dark and the only light is coming from the gun and the player's helmet.