The add-on sees crime increasing in the city, with guns and drugs infiltrating the streets. The new wave of nefarious activity is eventually traced back to an Eastern European mafia, and it'll be the SWAT squad's job to stop them.

The new expansion includes seven new multiplayer and single-player levels, new weapons, and new gadgets. The Stetchkov Syndicate also supports in-game voice communication, and features new modes for those who like to play together (a 10-person cooperative mode) and against each other (smash-and-grab multiplayer mode).