Evolution Simulator: Kill to Mutate!

Kills upgrade 2 stats and downgrade 1 stat.
Deaths upgrade 1 stat and downgrade 2 stats.
Possible mutations: speed, jump, damage, resistance, health, ammo, ability cooldowns, ult cooldown, and HealOverTime.
Hold crouch, melee, and reload to change hero. (Gotta hold it for the entire countdown. Other players will be informed when they shoot you that you are trying to swap heros.)
First to 50 kills wins!

Made by Shiftr