Limitations
Sam is currently sitting in the forest on top of a tree with his legs crossed.
He is suppressing all the corruption his body has absorbed since he started fighting in the second floor of the tower. Just like how Hel predicted, it is all maxed out. He needs to suppress it all before he can proceed further.
And he is also in the middle of hunting the wolves. They are tenacious. Sam thought he would be having an easier time if he defeated one wolf after another.
But as he proceeded further, he noticed that it is becoming harder. The wolves are getting more vigilant. They are going a bit defensive and they are becoming more dangerous.
He has to fight harder and plan more to get closer to the wolves now.
He got bitten way too much when he caught the last wolf he killed. The corruption is also making it harder for him to recover. That is why, he focused on the corruption first, so that the recovery will be easy.