Answer:
Rainsford is not a murderer.
Step-by-step explanation:
While yes, he IS being hunted for his life, General Zaroff is tired of the same old boring game. He gets a thrill out of humans being hunted. Smart, clever, intelligent, just like him. He wants a challenge and challenges Rainsford to this game. He is not a murderer because he is fighting for his life, while being hunted by one of the best hunters in the world.