Grand Theft Auto 4 The Lost and Damned Gang Wars

- Gang War missions are optional side missions
- 25 total Gang War missions in the game
- Gang War missions must be completed to achieve 100 percent completionGameSpot Review Blog: GTA IV: The Lost and Damned

Gang Wars in Grand Theft Auto IV: The Lost and Damned are optional side missions in which the player can choose to take out rival gangs with a few of their own gang members. There are 25 gang war missions in the game.
About Gang Wars Missions

Along with biker races, the Gang Wars are optional side missions the player can choose to play throughout the course of the single-player game. The Gang War system highlights the locations of enemy gangs on the in-game map, allowing the player to go an do battle with them at any time throughout the game. There are 25 Gang War missions in the game.Though they are not essential for completing the story of the game, they are necessary for achieving 100 percent completion.GameSpot Review Blog: GTA IV: The Lost and Damned
Gang-Centric Story

The presence of Gang War missions in Grand Theft Auto IV: The Lost and Damned is not surprising given the game's main plotline. The game centers around a new character, Johnny Klebitz, who is the vice president and acting leader of a motorcycle gang, known as "The Lost Brotherhood." Under Johnny's leadership, the gang has managed to remain relatively peaceful toward its major rival, the "Angels of Death." However, when the gang's true leader, Billy Grey, is released from prison, he looks to continue the violence of the rivalry that landed him in prison in the first place.GameTrailers: GTA IV: The Lost and Damned Story Gameplay