Back up the world before the long session
Major 1.0 patches have already touched terrain, items and save conversion. Keep a known-good backup before a large server migration or endgame push.
Stage one complete recovery set
Keep spare food, armor, weapon, travel materials and a clearly labeled recovery chest at the last safe base. The second set exists to recover the first, not to continue the expedition.
Protect the production core
Do not make every new building piece part of the outer wall. Keep storage, food and critical crafting one layer behind the exposed perimeter so a raid or mistake does not stop progression.
Plan the return route before the first fight
Mark boat/portal access, a safe staging point and a fallback direction. In a new biome, a known exit is worth more than one extra stack of loot.
Check the current patch first
Valheim 1.0 is still being hotfixed. Read the newest official notes before assuming a community workaround or old guide still applies.
Official reference
Valheim 1.0 launch notes · 1.0 FAQ
Unofficial guide. Product and game names belong to their respective owners. Always check current official patch notes before changing a server or important save.