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.
Hitting a player with Revolver Heals you for 45.
Heal for 90 after hitting at least one enemy with Defiance.
Generate 3 Ammo after hitting an enemy with Defiance.
Generate 3 Ammo after activating Nether Step.
Generate 3 Ammo after activating Reversal.
Reversal always fires back and does an additional 800 damage.