Generation Zero: Seeker

So I recreated some of the enemies in Generation Zero. One of those enemies was the Seeker. The Seeker is a mobile armoured camera unit. It doesn't have any weapons. Its only priority is to find the player(s) and set off a loud alarm to attract nearby machines to your presence from the four omnidirectional speakers/megaphones on the top of the robot. If the player(s) have killed all enemies in the nearby area and a scout tries to alarm for enemies, nothing will happen other than the scout following the player around.