I thought I made it 7 days my first playthough, but my morgue says 6. I just finished my second attempt and made it 22 days. I could have kept going, but it's 2am right now and I decided to attack a gang of penguins, only to get pwned.
I think winter comes around day 21. I need to time a day cycle, because that 22 days felt like an eternity.
I haven't found adventure mode, or whatever. I'd like to give it a try though. I think I've gotten a hang of the hunter-gatherer routine. I had a perfect base camp. I had a huge grass plain with rabbits to my south, a ton of rocks and a graveyard to the east, and flowers, frogs, mandrakes and a paved road to my west. I collected, cooked and ate 4 mandrakes to boost my days. They only give you one day, but it's a nice way to jump ahead.
I made it those 22 days after using a touchstone on day 14. I'd actually made it to day 20 or so, unscathed, and I'd just gathered 3 or 4 mandrakes, and the game crashed on my way back to camp. Luckily, I'd found a cave on day 12, so the autosave brought me back to then. I was kinda mad, so I bumrushed back to where I dropped all my goodies (only one mandrake was in my loot), and ended up getting killed by darkness because I didn't realize mandrakes could run from you. LOL! I was chasing it for a minute, and then darkness fell. I had no materials for a torch, so....yeah. Mandrakes all live in the wrong part of town. LOL!
Anyway, I'll play more tomorrow. Is it worth trying out the new characters, or should I stick with the default guy until I unlock everyone? PEACE.
EDIT: Wait...there's a map? Well fuck me, that'll make my life a lot easier. I've kinda limited my range of movement so I can always find my way back to a fire pit by nightfall. So I tend to move in the cardinal directions. Makes backtracking really easy, but a map will be so much better. That'll teach me for not paying attention.
If you really want a challenge, when you make a new game, go to world settings and change up stuff. Set berry trees and carrots to spawn less often, decrease summer length and increase winter length etc.
If you can't really survive til winter yet, try increasing food and decreasing monster spawns, so you can explore and learn about the world more in a playthrough.