This is a video of a first-person shooter game. The player is holding a gun and is moving around a building. The environment is a deserted, dilapidated building with broken windows and graffiti on the walls. The player is shooting at enemies and earning points as indicated by the "+100" points that appear on the screen. The player's health and ammo count are visible on the screen. The video is fast-paced and action-packed, with the player moving quickly and shooting at enemies.