When playing Doom Mode, I find it more enjoyable as a challenging "Exploration Mode" after at least knowing:
1. Avoiding combat/ stunning enemy. Scout first and fight only when required.
2. The surroundings of your safe place like camp or town (easy, just go out with a soup bowl and a blue soda potion then return by night, also counts the ration you need for 2 days - 1 night)
Then make preparations by doing these:
- Recruit NPCs, stock up dry food, 2 bowls of good ol soup for the 1st day traveling, 1 blue potion for emergency. And remember to go back to your safe place when your food is almost run out (enough for 2 days - 1night).
- Use least stamina as possible, and have NPCs check ahead if they are in the party. Stop by forest/ field when you have the chance then pick up fruit. End your first day with a good soup.
- If the quest was harder than you thought and you need to replenish stamina, drink the emergency blue potion instead of resting. You should have 2-days ration to keep you going enough to reach somewhere for food
The main point of surviving Doom Mode with least Surv point is either to get 30+ dry food (which is tedious imo), or use the least amount of stamina as possible (escape/stealth/stun) then return if food ration can only help you get by till the next day. That +1 blue potion to keep you safe in unexpected events.