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 Movement Speed by 21% for 3s after using Grumpy Bomb.
Increase your maximum Ammo by 3.
Heal for 75 for each Sticky Bomb you Detonate.
Increase your Reload Speed by 12% for 3s after using Detonate.
Reduce the Cooldown of Grumpy Bomb by 0.8s.
Increase the radius of Sticky Bombs' explosions by 20%, but reduce maximum Ammo count by 2.