Many new cards are unlocked by building specific structures in your camp. For example, the Supply Depot unlocks the ability to bring supply items, and the Field Kitchen improves potion effectiveness. Some cards are also unlocked by achieving certain milestones or defeating specific enemies for the first time.
- Building Structures: The primary way to expand your card pool.
- Defeating Bosses: Often unlocks new tiles or mechanics.
- Specific Actions: Some cards, like the River, are unlocked after placing a certain number of other tiles.
Always check your camp's building menu to see what new cards are available to unlock and what resources they require.