C4 will be given randomly to one of Black List players. Black List team must plant the C4 to one of the bombsite (A-site or B-Site) to destroy the site, while Global Risk must prevent them from doing so. If the C4 has been planted at one of the site, a notification will be given to all BL members about where the bomb is planted. If there is any Global Risk nearby, he/she will give notification to all another Global Risk about the bomb location. Global Risk have to defuse the C4 within 40 seconds in order to win, while Black List must protect the bomb until it explodes.
Additonally, Global Risk & Black List can purchase / obtain a bomb defuse kit, to decrease the defuse and planting process by two seconds, respectively. It is also possible to decrease it by getting certain achievements tied to both Search & Destroy and Ghost Mode. The decreased time will vary depending on which of five levels are achieved.