Strategic planning: Before each wave of enemy invasion, you need to carefully plan your defense layout. Consider the enemy's weaknesses and path choices, and arrange your defense tower reasonably to eliminate the enemy to the maximum extent possible and protect your castle. You can use soldiers and traps to increase defensive strength, while also paying attention to resource management to ensure the sustainability of your defense system.

Level Challenge: The game consists of multiple levels, each with a different map and enemy combination. You need to challenge each level to unlock more advanced defense towers and skills. Each level has specific goals and difficulties, and you need to flexibly apply your strategies and skills to complete the challenge.