GTA IV - A Dish Served Cold

During a meeting with Jimmy Pegorino, Niko is strongly pressured to go a heroin deal with Dimitri Rascalov, Niko decides not to take the deal and instead commit revenge against Dimitri after finding out from Roman that he is on board the Platypus. He goes over to the Platypus, which is still docked in East Hook, and a violent shootout occurs, as Niko kills every single one of Dimitri's men, Niko eventually corners Dimitri in the ship's cargo hold. During the standoff, Niko wounds Dimitri, who then begs for his life and tries to warn Niko that people will be unhappy if he is killed. Niko is unconvinced and kneecaps Dimitri before shooting him in the head, killing him instantly.