You were born with 9 lives, but during battle you have the ability to trade each life for a unique power. The more powers you have, the less lives you get.
Guns deal a LOT of damage... but trading a life for a bulletproof vest will help. A vest may help, but your opponent might choose faster reloads for when your protection is gone. What will you do next?
The loser gets to edit their loadout after each round. To win you must think carefully and adapt to any situation.