Some of the zombie's cries and roars are actually quite unnerving, particularly the Infected and Thugs. Here,enjoy.
Suicider zombies are basically more ghoulish versions of Boomers. Instead of spreading bile on you, they explode on you, and while the Boomer only leaves behind its lower torso and legs upon death, this thing leaves behind its legs, lower torso... and its bloodly mangled upper skeleton.
"Help me..." *BOOM!*
Wanna know whats worse than that, Word of God is suiciders are still fully conscious and aware of what they're doing, those tumours are actually parasites forcing them to seek out the living.
Outrunning most of the zombie types are fairly easy. Outrunning infected can be nerve-wrecking. Unlike the others, they don't stop coming after you until you reach a safe house or area. And how fast and how long you can run from the infected depend on your stamina. And you have low stamina.
During the City map, there are times when you find yourself climbing for safety. You think it's all over, but sometimes, and it does happen, the infected climb up to kill you.
The sewers can become fairly unpleasant. Trapped in tight spaces with walkers is one thing. Trapped in tight spaces with infected on your heels while you're trying to reach safety is a whole other matter.
Returning from the Super Market to the Town Hall. When you enter, you find barricades that have obviously failed, fire, and blood, guts, and dead bodies everywhere. Completely overrun by zombies. Absolutely no one is alive anymore. Every inhabitant in the Town Hall is now either a corpse or a zombie. Every police officer. Every civilian. Even the Mayor. And it's implied it's all your fault. Sweet dreams.
Installing on the PC sets the tone nicely with a blood chilling scream when you click setup.
Guess what? The virus is hinted at being caused by kuru, right? That's not the Nightmare Fuel part. Kuru is a real disease, that's not it either. Kuru stems from cannibalism, even that's not the reason this counts. The real reason is because kuru really can turn people into zombies, the game only exaggerates it through the disease mutating. We could well be just one adaptation of the virus away from the events of the game.You're welcome. Thankfully as of 2009 the disease has all but dropped off the face of the earth thanks to the Fore people of Papua New Guinea wising up and dropping the cannibalistic rituals that helped the disease to spread.
Koritoia Ope, really, once you find the grisly details out. He worships the infected, regarding them as holy individuals who walk between the real world and the Dreamtime, and is then shown attempting to beat a girl to death because she's an "evil spirit". After he gets shot, he's made out to be even worse: the girl in question? His own daughter. Who also comments that she ran away from the tribe originally because he sold her to another man as a slave to pay off his gambling debts. Plus, he's responsible for the initial outbreak of infected in the first place, by using his position as medicine man to make his people eat the brains of zombies, causing them to all be infected.
The novelization makes him even worse by filling in the blanks the game left: the first zombies? They were men he had beat and rape his daughter when she came back to the tribe to try and make peace with him. They caught the disease from her, then he had her sealed up in the tombs to starve to death because he blamed the "immortals'" comparative mindlessness on her "being an evil spirit".
Quarantine. Dear God Quarantine. It's a sealed off part of Moresby, designed to keep the sick away from the healthy. Unfortunately, it's also a place where Infected spawn every fifteen seconds, essentially making it the deadliest place on the island. You only have to go there during The Third Head Of Cerberus quest, but it's terrifying. You get ambushed by horde after horde of infected, and any solo player will most likely die within thirty seconds of entering the zone.