Massively increases Melee Damage against enemies with low health.
Increases your Zoom with all gun types.
Additionally, your Aim is not disrupted as much when taking damage.
At 0ne with the Gun
Greatly improves your Accuracy with Sniper Rifles when shooting from the hip.
Additionally, increases your Reload Speed and Magazine Size with Sniper Rifles.
Increases damage dealt when attacking from behind, or when attacking an enemy who is targeting someone other than you.