The Diamondback is a promotional secondary weapon for the Spy. It is styled after the Diamond Back .357 revolver from Deus Ex: Human Revolution. This weapon can store up to 35 guarenteed critical hits as the clip plus the rest of the stored ammo is 35 in total, similarily to the Frontier Justice, and as a drawback has a 15% damage penalty and no random critical hits. These crits are granted on backstab, and buildings destroyed with your sapper attached, so it doesn't have to deal the killing blow. The crits are lost on death. Also like the Frontier Justice, crits cannot be gained while the user is dead, but if the spy is alive after a sapped building is destroyed, they will be granted crits. A critical hit does 105 damage.