The ambusher

Meet Ivan at His new office building downtown CBD where he tells you to go to a gem deal in the aquarium, Then after the cutscene finishes Go to the Helicopter on the roof Fly to the top of the aquarium, Then shatter the glass roof and go in Kill the guards, Find the deal and kill the dealers, then pick up the gems. And then go back on the roof, Escape the S.W.A.T team, and then land the helicopter on the roof of Ivan's office building.

Mission number: 21

Mission Characters: Ivan Nester, Ron parker (One of the dealers), John guardian (One of the dealers) Dealer's bodyguards and Dealer's men.

Mission Giver: Ivan Nester

Mission Reward: 9500$