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.
Generate 6 Ammo for each enemy hit with Frag Grenade.
Increase your maximum Ammo by 4.
Regenerate 4 Ammo every 1s while using Hustle.
Gain 25% Lifesteal while using Iron Sights.
Increase your maximum Health by 250.
Switch your rifle to Three-Shot-Burst mode, increasing your effective range and firing three 210-damage shots every 0.4s.