How to progress through the island campaign
Start with Coral Reach
Keep Standard difficulty selected while learning the route. Preview wave 1 to plan your opening and wave 15 to see the boss. As campaign rank rises, enemies gain health and spawn closer together.
Plan your first two towers
In preparation, open Wave plan. Review the recommended tower pair and its gold cost. Preview either site on the map and drag the matching tower card to begin construction. The plan marks a tower as ready once construction finishes.
Match the hero to the enemy
Take Iona when runners threaten the exit, Vesper against shielded groups, and Rowan to interrupt a boss. Brann helps if your towers must stay near the attack zone.