With a handful of optional objectives, it’s only natural to wonder whether it’s possible to keep playing Flintlock: The Siege of Dawn after beating the final boss and finishing the main story. Flintlock is a Soulslite action RPG with firearm-centric gameplay. As protagonist Nor, players will dodge, jump, and shoot their way across the map, defeating mobs of enemies and crushing Old God bosses as they attempt to keep humanity alive.
https://screenrant.com/can-you-keep-playing-flintlock-the-siege-of-dawn-after-beating-the-game/