If you're having difficulties beating a mission, please try improving your Heroes. You can improve your Heroes by leveling them up, upgrading their skills, Promoting them, or by Evolution.
Additionally, please also try changing up your team. Team composition can make a big difference in a battle! Experiment and see what works best for different situations.
Additionally, please also try changing up your team. Team composition can make a big difference in a battle! Experiment and see what works best for different situations.