You forget to add dead is dead.
It would be over already. I died twice but that can happen on a normal game. The first time was against a fatty and I just had no stamina to keep banging with him. The second time I did a night time dig quest for food but it spawns a mini horde when you open the chest. I had planned an escape route but it was too craggy and I got stun locked by a fatty and it was over before I could do anything. I got my stuff back (barely) and out of nowhere I'm getting hit, I spin around and can't see anyone until the vulture hits me again, giving me infection. I smashed him with my knuckles and harvested him. The road had a couple of fatties on it, so I decided to cross the craggy mountains instead and tried to slide down a ledge but it was too steep and I broke my leg.
The sun came up and I got my reward, 10 big health kits. No cooking pot yet, no duct tape, so I hobbled to a nearby hotel in search of a cooking pot. I found one in the first cupboard, so I hobbled back to my roadside sleeping bag, chest and campfire only to realize I had no murky water. So back to the hotel. I started breaking into a room only to see a fatty I didn't want to fight too bad, so I spiked the doorway shut. I don't know if its new but he avoided my spike and tried to make his own hole out. So I shot arrows through the door and punched him after he broke the top block and was working on the bottom block and barely killed him before he broke through. The toilet was empty but I found a wrench!
I harvested a bed for cloth for the duct tape I needed to make a splint and I hobbled back to base, made the splint (after 30 minutes of a broken leg) and have about 16% of a splinted leg to go. I'm infected so I think I'm just going to drink my mega crush and hit the road hoping to find forest and search for honey. At this moment I'm thinking tree stumps in every damn biome would be a great idea.
I did find some brass knuckles in a gun safe at a ranger station at the end of day 1, so that helped since I'm planning fortitude for this nightmare test. It sure makes you play a lot more cautious since you can't outrun them, its a fight to the death in most scenarios. I'm carrying spikes around just in case to try and kite them around a bit but haven't been able to use them yet, its been one on one to the death in most fights and I manage to get arrows off. Not sure what everyone is on about, I have 100+ arrows already on day 2 but I use my fists for most fights.
It makes you think twice about how you play. A couple zombies on the road is something to fear early game for sure now. Nightmare mode is pretty intense but I like it.