• Damage (short Range): 46 - 56
• Damage (middle Range): 31 - 37
• Damage (long Range): 15 - 19
• Mini-Crit: 46
• Critical Hit (headshot only): 102
• Shots: 6
• Total shots: 24 + 6 in the weapon

• Can save Crits

• No random Crits

The Diamondback is a promotional primary weapon for the Spy. It is styled after the Diamond Back .357 from Deus Ex: Human Revolution.

Similarly to the Frontier Justice, the Diamondback has the ability to store up to 35 critical hits for later use but cannot deliver random crits. A potential critical hit is stored for each enemy building that is destroyed while being sapped by that Spy's Electro Sappers; the Spy does not have to earn credit for the destruction. As a drawback, the weapon delivers 15% less damage compared to the default Revolver. Any stored critical hits will be lost upon death and any buildings destroyed with the Spy's Electro Sapper attached while he is dead will not be granted to him upon respawn.

The Diamondback was awarded in Genuine quality to players who pre-purchased Deus Ex: Human Revolution on Steam before August 26, 2011.