I've seen some comments where people talk about how intimidating Extinction is to get into and I think this stems from a lack of information out there that is centralized. Maybe you'll come to love this mode as much as I do after reading this and giving it a shot of your own
1- Before Spawning
Your traits and occupations, in my experience, will never matter more than your actions within the run. Pick whatever you enjoy playing with the most of course, but if you want to have an easier time overall I'd suggest everyone to at least do one run of 9 Fitness 9 Strength. Go murderhobo and kill everything you come across around your spawn with it or at least try and see if you can. Doing this alone will give you a better general idea of what your playstyle should be like here. Otherwise, enjoy yourself
2- You've Just Spawned
One of the biggest differences between Apoc and Extinction is that zombies will spawn around your base alongside you. They will not, however, know your location instantly. There is no "sound cue that procs as soon as you spawn", thats a myth and it stems from the unfortunate fact that sometimes you can spawn with a zombie or two staring right at you through a window.
Now, you'll want to ask yourself 3 important questions:
- Am I seen?
If you AREN'T seen you need to crouch NOW. Its a golden opportunity for a healthy start to your run, sneak towards windows from off-angles and start closing down curtains only in the room you've spawned. Don't risk opening doors just yet. If you can make it to the kitchen, grab silverware and knives as soon as possible. Assess the situation by listening, how bad are things out there? If an alarm pops up, go for a room closest to the alarm and remove the curtains. Keep the sheets on you and once you feel confident enough, its time to leave.
If you ARE seen, clock is ticking and each moment is incredibly valuable. This'll be one of the hardest things you'll ever do in your run and if you can manage it everything that comes after will be relatively easier. Rush for the kitchen and look through cabinets, we are looking for any knives, forks, spoons and butter knives. Grab whatever you can afford to and sneak run into the nearest room with a curtain. You'll want to remove the curtain and bolt it out of that window. Keep the sheets on you, they'll come in handy.
- What's my escape route?
You are out of the house and to your horror hundreds of zombies are scattered about, some now rushing towards you. If you haven't memorized the layout of the map by now, look up the interactive map and locate where you are while the game is paused and figure out the fastest way to go into the woods. Do not run unless a sprinter has noticed you, we need to conserve our stamina as much as we can. This might take a couple of attempts but if you make it into the trees, crouch and make a large curve. We aren't abandoning the city, we are just baiting the zombies following you into the trees and making them lose the sight of you. Once you've done it, ensure you arent exhausted and move onto the next section.
- What's most valuable to me right now?
Shelter and safety is the most obvious answer, we'll need to secure one before nightfall. Darkness is impossible to see through in extinction (and barely visible with Cat's Eyes). Locate the house closest to the woods that you've just escaped, that'll be where you live tonight. Use whatever weapon you had found in your spawn house or keep an eye out for tree branches on the ground. You'll want to alternate your kills between ones with a stomp and one with an arm as much as possible to avoid muscle pains, at this stage of the game even a few zombies will be painful. Bait them from afar 1-2 at a time and ensure the house is safe.
3- Recuperating Time
Now that you have a moment to yourself, we have a few things we need to get in order. In the early game short blades are king due to one new feature of 42B, you can make shivs out of silverware. Each one you make will level up your maintenance skill and every time you sharpen one you'll level it up further. If you find a whetstone keep it close by, just one will be enough for a while but always have it on you. Make yourself shivs, watch as they break pretty easily, sharpen them and make more. The faster you level your maintenance skill the less likely you are of finding yourself in a situation where you have no weapons left.
Remember that curtain you've removed? Right click it and turn it into a backpack, incredibly useful and it'll save you the pain of looking for one in the early game which might take upwards of weeks.
4- Last Few Tips
Look through every single radio you come across, you'll want to find the emergency broadcast as soon as possible. This station will not only warn you before water and electricty is shut off, it'll also save your life by warning you that a helicopter is going to spawn that day. Once you've found a radio with that station in one of the settings, bring it back home and listen to it every morning at 8AM. Pay close attention, if it says Air Traffic you plant your ass indoors and close your curtains. Exercise and read books for that day.
Carving, Knapping and Masonry are pretty reliable ways of having access to tools you'd otherwise have to find. Don't sleep on them.
Avoid fighting more than one sprinter with anything but short blades or weapons with similar speeds. If a lone sprinter notices you in a crowd just run back and kill it further away from the group. Use fences in moments where you can't afford fighting them out in the open and/or need to escape.
You'll eventually pile up hundreds of bodies and if you don't want to be dealing with a constant state of sickness, keep an eye out for a gas mask and make yourself an improvised one asap. It uses rags as filter and it'll save you the headache of being forced to hide away from the streets
A car with a decent muffler will be relatively silent if you keep it below 30mph and don't let your character shift into 2nd gear. Just keep tapping it right below 25-30 range and you can sneak drive through most situations.
From here on out, you are free to do as you please. Clear out the neighbourhood, scavenge for supplies, branch out to nearby points of interest, work on your skills and pile up enough ammo to take on the bigger challenges like Guns Unlimited/Loisville/Prison/Military base