While playing on the Nuketown 2025 map in Multiplayer mode, shoot the heads off all mannequins within the boundaries of the map in less than 90 seconds. The mannequins spawn randomly each time. It is much easier to do this with at least one other player. If done correctly, the large population sign with a TV screen on it in the center of the map will change to a TV screen with a retro "Activision" logo on it. Interact with it to play four different Atari games: H.E.R.O, Kaboom!, Pitfall, and River Raid. Note: You will remain invincibile while playing the games.