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 Ammo by 4.
Generate 2 Ammo for each enemy hit by Harpoon.
Heal for 140 for each enemy hit with Harpoon.
Gain a 600-Health Shield after dropping to or below 50% Health.
Increase your maximum Health by 150.
Harpoon no longer has a Cooldown, but no longer Slows enemies hit.