This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Increase your maximum Health by 250.
Reduce your weapon recoil by 40% while using Iron Sights.
Increase your maximum Ammo by 6.
Reduce the Cooldown of Frag Grenade by 4s for each enemy hit by it.
Increase your Movement Speed by 10% while using Iron Sights.
Heal for 300 per second while using Hustle.