Once your defenses are established, prepare for waves of enemy attacks. These waves will often include a mix of human units, powerful Myth Units, and sometimes even a Titan. Position your military units strategically behind your walls and towers. Use ranged units (archers, Turmas) to attack enemies from a safe distance, while melee units (infantry, cavalry) engage at choke points. Keep your heroes focused on enemy Myth Units and Titans, as they deal bonus damage.
Resource management is critical during this phase. Continuously train replacement units from your production buildings. Don't let your population cap out; build more Houses as needed. Use your God Powers defensively: 'Frost' can freeze large groups of enemies, 'Restoration' can heal your entire army, and 'Bolt' can instantly eliminate a dangerous Myth Unit or hero. Prioritize destroying enemy siege units that target your walls and towers. If a Titan appears, focus all your heroes and powerful Myth Units on it. Defending until the timer runs out or a specific enemy is defeated will complete the mission.