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 the Health of Siege Shield by 500.
Increase your maximum Health by 750.
Reduce your active Cooldowns by 20% after getting an Elimination.
Gain 40% Lifesteal.
Increase your maximum Ammo by 2.
Increase Siege Shield's maximum Health by 2500 and its size by 50%, but reduce its Movement Speed by 80%.