gameplay consists of players fighting through waves against zeds. as waves pass, the enemy count will increase; different enemy types are introduced as players complete each wave, culminating to a boss fight as the final wave. enemy count is determined by the number of players in the game. the boss character is determined randomly upon the start of the last wave, and each boss is defeated differently. players equip themselves with melee weapons and firearms, a healing syringe, and a welder used to block passages. random weapons, ammo, and armor can be found by exploring the level, though players have a limited amount of weight they can carry.