This video shows a first-person shooter game where the player is holding a gun and moving through a building. The player is looking down the sights of the gun and shooting at enemies. The game's HUD is visible, showing the player's health, ammo, and other game-related information. The player moves through different rooms and corridors, aiming and shooting at enemies that appear. The video is fast-paced and action-packed, with the player successfully taking down multiple enemies.