The Minotaur really didn't deserve the treatment it received. It had been summoned and knocked out, and the moment it woke up, it faced another battle.
Luckily, it was not gifted with the sentience to understand the woes of its existence.
Its only goal was to kill, and kill it tried.
However, its opponents had other plans.
August found that his fighting style wasn't as much of a problem as he originally expected. He needed to focus more on the depth of his laws, so that he could have a more diverse arsenal to enter battle with.
As for Valerie, while her power was more than enough, her ability was extremely limited when she didn't have the support of the earth.
It was a weakness she never would have discovered on her own. Now that she'd realized it, she wasn't planning to stop until she fixed it.
The best way for August to train was just to fight.