Both players begin the game with a standard machine gun with infinite ammo and ten grenades. When certain enemies are killed or certain building structures are brought down, they will drop guns, grenades or other items that can be collected, such as points or 1UPs. The guns that can be picked up during gameplay consists of the Balcan (A more powerful machine gun), a flamethrower capable of only taking out ground units and a missile launcher, while the other grenade-type weapons that can be collected are the spark and napalm bombs. If the players save a female hostage from the enemy, the hostage (named Chris) will help players by shooting at enemies, until the player who rescued her is killed or reaches the end of the area. On occasions, the players are sent into a boss round that takes place in between stages.