After the initial cutscene, United Liberty Paper will message Niko a photo of the target. The player must acquire a police car to access the Police Computer's search-by-photo option in order to get Dimayev's location on their radar, which is in East Island City. The player must then go to Kamayshev Import/Export and go to the right of the compound. Dimayev himself is in the doorway of the small parking hut on the right side of the first level of the compound. If the player fails to kill him in this spot but alerts him and his goons to their presence, he will flee towards the compound roof.
If the player fails to or opts not to eliminate Dimayev out front, he will flee to the roof of the small building on the second tier of the compound. Niko kills the goons on the first level. The player must then climb the ladder or walk around the wall on right side to reach the second level where another small group of guards await. One of Dimayev's goons will surrender (if he is the only survivor left) and the player can choose whether he lives or dies. The choice will not affect the game. Once the job is done, Niko will automatically phone United Liberty Paper and tell him that he has "served his purpose.".
The player can skip the first half of the mission by simply driving to where Dimayev and his goons are (corner of Dukes Boulevard and Harrison Street, opposite the police station) in Dukes. It is close to the trigger point of one of the Drug Wars side missions for Broker in The Ballad of Gay Tony.