Rewinding is how you grow stronger. It resets your progress to an earlier day but gives you , which is used to upgrade skills.
Please clarify — could be a Steam guide, a paid PDF, or a fan wiki. Without a link, I can’t verify legitimacy or quality. days+bygone+guide+new
The primary gameplay loop involves surviving "Days" (waves of enemies). Enemies will approach from both sides of your defensive structure. Rewinding is how you grow stronger
When you reach the point of "awakening" skills, prioritize these in order: a paid PDF