After taking out these first two wolves, Blaze released the flame wall that he had gathered.
Using the wall was only effective in the beginning to keep the wolves from charging them. That would stop the wolves from gathering momentum, making it easier for them to take down the wolves.
But once the wolves had been stopped, keeping the flame wall up would hurt them instead of helping them.
After he released his flame wall, he gathered all of those flames into a set of armour around himself.
This time, he even formed a sword and shield of flames as he prepared to face the wolves.
The wolves recognized that they were in a bad situation and even looked to escape, but they knew that trying to escape would just result in some of them being picked off. With how the humans were keeping track of them, it was certain that they wouldn't allow them to escape without any harm.
So if they tried to escape, it was certain that they would lose a few members.
