He deploys a Wall Breaker and adds one more Wall Breaker to take out the walls. That means if your Wall Breaker's level is 5, you need 2 Wall Breakers to destroy the walls.
One Wall Breaker missed to take out the walls, so the player deploys 3 Wall Breakers totally.
Wall Breaker
×3
4.
The player deploys 2 Barbarians to distract the defense. While Cannons are attacking Barbarians, he drops 2 Wall Breakers to take out the walls.
Barbarian
Wall Breaker
×2
×2
5.
After the walls are gone, he drops 22 Barbarians and 3 Goblins.
Barbarian
Goblin
×22
×3
6.
While Barbarians are attacking buildings, the player deploys 35 Archers
Archer
×35
7.
After the defenses are gone, Archers destroy rest of the village!