On page eleven, it says, "Rest brought him new confidence and almost a feeling of security. Even so zealous as a hunter as General Zaroff could not trace him there, he told himself; only the devil himself could follow that complicated trail through the jungle after dark. But perhaps the general was a devil." Rainsford is at war with either feeling safe and trusting his plan, or overestimating the counter moves of the General.
On the second to last page, it states, "He could stay where he was and wait. That was suicide. He could flee. That was postponing the inevitable. For a moment he stood there, thinking. An idea that held a wild chance came to him, and, tightening his belt, he headed away from the swamp." Rainsford is constantly at war with what to do next. He has to use what he knows while trying to consider Zaroff's skill set.
Very early in the story Rainsford says, "I am a hunter, not a murderer." Then the last sentence of the story says, "He had never slept in a better bed, Rainsford decided." He is at odds with what he considered to had been morally correct, then changed them to fit the idea of "fight or flight" response to being hunted. Rainsford has still killed Zaroff, even though he had won the game. In a way, Zaroff and Rainsford are one in the same.