Hostility is a core mechanic that represents the wilderness's growing resistance to your presence. It increases with each passing year, the number of woodcutters you employ, and the opening of dangerous glades. High Hostility leads to more severe Blightstorm effects, such as increased resolve penalties and more frequent glade events.
The Blightstorm is the overarching threat, a cyclical event that forces you to abandon settlements. Your goal is to earn enough Reputation before the Blightstorm consumes your current settlement. Managing Hostility is crucial; consider reducing woodcutter numbers during the Drizzle and Storm seasons, and prioritize resolving glade events quickly to mitigate their negative impacts.