The video shows a first-person view of a player in a video game. The player is moving through a series of rooms and corridors, which are mostly empty except for a few other characters that appear in the later part of the video. The environment has a realistic look with concrete walls and floors. The player is equipped with a gun, which is visible in the lower part of the screen. The game's HUD (heads-up display) is also visible, showing the player's health, ammo, and other game-related information. The lighting in the game is dim, with most of the illumination coming from artificial sources within the rooms.