Tristan flies, and he simultaneously shoots his canons countless times. Each and every shot was aimed at the tanks' legs, guns, and big canons. He gets as close as possible to the tanks so his shot and the subsequent explosion will not fatally injure the confused Phaenon's soldiers.
And thanks to his invisible mode, he could get close to the soldiers and move them away by hand or by Windrose's powerful airflow mode to get a clean shot at the tanks.
The soldiers were shocked and confused when something suddenly pulled or pushed them away from their tanks moments before balls of lightning struck the machines.
Before long, the sirene sound blasted inside the Fort and all the neighborhoods around it, accompanying the explosion sounds from the damaged tanks and artilleries.