Immediately alt-tab (or press the Home button on console) and copy your save file to a desktop folder. On PC, navigate to: C:\Users\[YourUsername]\AppData\Local\DarkSiren\Saved\SaveGames
A: Yes. Once you restore the save, most achievements will re-trigger when you perform a linked action (e.g., “Kill 100 enemies” will pop after your 101st kill). For story achievements, you may need to replay the final boss of that chapter. dark siren save file fixed