Tournament/Carnage Accumulator

Carnage Accumulator is a monthly event in Tournament season 13. 
The goal is to gain as many points as possible. Player gains points for dealing damage on opponent vehicles, and smashing zombies. Doing so starts a point multiplier, which increases with every subsequent score, but also slowly runs out if player doesn't score in a while. After it runs out the multiplier slowly decreases and if player doesn't score in the meantime it resets completely.