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.
Heal for 320 after hitting at least one enemy with Skewer.
Gain 3.5% Lifesteal while in Dragon Stance.
Increase your maximum Ammo by 25.
Increase your Healing received by 10% while firing your SMGs.