Core answer: Day 30 is a story failure, not a save wipe. Brencis holds the ceremony, Coen's family is killed with the rest of the village, your objective flips to vengeance, the ticking deadline disappears, and you can keep playing. You lose the family outcomes, the family epilogue, and the In the Nick of Time trophy.

What Actually Happens When the 30 Days Expire

Completionist route: players who let the clock run out report this is the only way to keep free roam after the climax. A "save the family" ending typically closes the playthrough, so you reload a pre-finale save to keep exploring.

1Actionable Steps, in Order

Key Decisions

ChoiceYou Get / You Lose
Save family before Day 30Best and family endings, In the Nick of Time trophy, family epilogue. You lose free roam after credits and must reload to keep exploring.
Let Day 30 passOpen-ended revenge play with no timer and most side content still available. You lose the family, the epilogue, the trophy, and some timed side quests.
Rush Brencis earlyA short early ending, at the cost of almost all preparation and side content.
You do not need to 100% the map to make the deadline. Exploration itself does not spend segments. Hourglass actions (quests, perk unlocks, some chests and events, shrine waits) do. Many players finished the main path with days left.

Common Mistakes to Avoid

Summary: let the family die and you get the completionist route with the clock gone and the map open. Save them and you get a tighter, more hopeful ending, then reload for leftovers. Make the save first, pick the tone second.