With the introduction of Skeleton Army and Minions, you need to be prepared. Always keep Arrows in your deck to counter Skeleton Army. For Minions, your Archers or Spear Goblins can provide air defense. If you unlock the Baby Dragon, it's an excellent flying splash damage unit. When facing a Balloon, try to pull it with a building like the Tombstone or use high-damage air troops like Minions to take it down before it reaches your tower.
