Serious Survival mode:
To unlock Serious Survival mode, beat the game in Regular Survival mode. In Serious Survival mode, you must survive as long as possible without a partner.
Another house location:
Go far into the jungle to find a grassy place where you can make another house.
Getting food and firewood:
You can ask your partner for food and firewood. When you have 40% or less, tell your partner to get food or firewood.
You can only go to sleep if you do not have 0% for water and food. However, that only applies to your character. The game will still allow you and your partner to go to sleep if you have at least 1% food and water, even if your partner is at 0%. You can both rest to fill up the stamina meter as long as the character you are playing as has food or water. Hold the partner’s hand to rest.
Continuously press A outside and you will get spices every time. If you want to get salt or shells, go to the beach.
Learning recipes hint:
To learn the recipes and complete the scrap book, first give your partner food to cook with until a recipe is made. Learn what ingredients and cooking method were used. Make sure to give your partner one lot of those ingredients and make a note of how many of the spices you have in your inventory. Have your partner cook a meal using one lot of those ingredients until they make that recipe again. If they do not do this the first time, note how many spices they may have used (perhaps making another dish). Once made, check your spices to see which ones have dropped in number to know how many of what spices they used. Cook for yourself using the same ingredients and spices. The only complicated part is learning which of the six methods they used. If it’s on a leaf, they either cooked it raw, steamed it, or baked it. If it’s in a bowl, it was either fried, boiled, or perhaps steamed. If it’s on a slate, it was either baked or stir fried. There are exceptions.
Look closely on the walls of the ruins to notice what appear to be old style fire pits. Light these with your torch and a wall will open up, giving you access to a new room. One way will be a new exit to the swamplands while two openings will lead you to rooms that have huge pedestals that must be lit with your torch. Do these in the order as they appear one after another.