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.
Heal for 140 for each enemy hit with Harpoon.
Heal for 100 for each enemy hit by Broadside.
Heal for 150 every 1s while standing near a Shortcut.
Increase your maximum Health by 250.
Increase your maximum Ammo by 3.
Harpoon no longer has a Cooldown, but no longer Slows enemies hit.