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 Healing you receive by 5% while at or below 50% Health.
Increase your maximum Ammo by 5.
Generate 5 Ammo for each enemy hit by Harpoon.
Generate 2 Ammo for each enemy hit by Broadside.
Heal for 200 after exiting a Shortcut.
Harpoon no longer has a Cooldown, but no longer Slows enemies hit.