Castle Clash - Arena Run - Breaking into top 10,000

A short video of my heroes making an arena run. Thunder God, Ninja, Succubus, Champion and Werewolf. The middle path is a defense line to delay the enemies. The defense line consists of Thunder God, Champion and Werewolf. All three has 10,000 HP. So they hold off enemies just enough for my Ninja and Succubus to deliver the attack on the lane below. That's my strategy so far. It will change once I get another legendary hero.