The Diamondback is a community-created promotional secondary weapon for the Spy. It is based on the [url=http://www.wikia.com/wiki/wdeusex:Diamond_Back_.357]Diamond Back .357[/url] from the video game [url=https://wiki.teamfortress.com/wiki/Deus_Ex:_Human_Revolution]Deus Ex: Human Revolution[/url]; a futuristic metal Revolver with a black grip, front sight, and cylinder.The Diamondback has the ability to store up to 35 critical hits for later use. One critical hit is stored for each enemy backstabbed, or for each building that is destroyed while being sapped (regardless of whether or not the Sapper is what actually destroys the building). However, any stored critical hits are lost upon death, and any buildings destroyed with the Spy's Sapper attached while he is dead do not grant any critical hits. In addition, the weapon's base damage is 15% lower than the Revolver, and it cannot roll for random critical hits. In Mann vs. Machine, sapped Robots do not grant critical hits upon their destruction, but can still be backstabbed to store a crit.The Diamondback was awarded in Genuine quality to players who pre-purchased Deus Ex: Human Revolution on Steam before August 26, 2011.The kill icon for the Diamondback was contributed by Ani .