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.
Activating Fire Bomb heals you for 200 over 2s.
Increase your maximum Ammo by 10.
Heal for 60 for each enemy hit with Nade Launcher.
Increase your maximum Health by 250.
Heal for 400 after getting a Killing Blow on an enemy affected by Hunter’s Mark.
Nade Launcher has 3 charges, but reduce the damage of each to 650.