Your fellow firefighters. They are dispatched on missions to rescue survivors and suppress fires, equipped with protective suits, oxygen tanks, safety helmets, gas masks, and tools like axes and chainsaws. (The image was substituted as there were no pre-infection photos available!)

They wear ordinary civilian clothes or white lab coats. They are not hostile, and your objective is to evacuate them.

The basic entity and the most common type. They are weak and will rush toward the user upon detection.

They roll to dodge bullets when fired upon. If hit, they fall but will stand back up and rush again; to prevent this, you must perform a finishing blow by stomping on their head while they are down.

An enemy armed with a blunt weapon. They are characterized by slow movement and high health, with a very long attack interval of 5 seconds. Getting hit can cause bleeding or instant death. When taking damage, they retreat while protecting their head with an axe.

Upon spotting the user, they scream and charge at high speed to self-destruct with a grenade. If killed before they pull the pin, no explosion occurs.

Armed with a shield and a machete. Upon detecting a player, they bang on their shield and approach slowly. The shield blocks all bullets. Since they always keep the shield facing the player, the most efficient way to kill them is to shove them to kick the shield aside.

They emit heavy breathing sounds periodically while wandering and move with a staggering gait. They have three sharp, protruding claws.