C4 is unlocked at level 12. It has a much smaller throwing arc than most other explosives, likely due to being significantly heavier. It will stick to any surface it comes in contact with, including other players. After being planted, it can be detonated at any time regardless of the distance by pressing the grenade button again. Due to this, the player can have no more than one active C4 at a time.
After dying, the link between any active C4 is broken and can no long be remotely detonated.
- The C4 packages seen in the campaign are significantly larger than the ones found in the multiplayer.