"...His whole idea at first was to put distance between himself and General Zaroff; and, to this end, he had plunged along, spurred by the sharp rowers of something very like panic.."
"...An apprehensive night crawled slowly by like a wounded snake and sleep did not visit Rainsford, although the silence of a dead world was on the jungle.."
Rainsford Is panicking and trying to calm himself in the story. He is thrown out on the island and is waiting to be hunted. When he tries to calm himself, you know that he is panicking.
He finds a tree to that will provide him with shelter, rest, and give him a little bit of a safe feeling. He convinces himself that General Zaroff can not find him, but stays up all night, fearful of the man coming and finding him. We can tell by this, that he is Paranoid.
While on the tree, Rainsford desperately creates a trap for Zaroff. He wants to be able to protect himself even if he has no weapons. When morning hits, Zaroff searches for Rainsford. The trap that Rainsford made injures Zaroff and the man goes back home to treat his arm.
When Zaroff finds Rainsford, Rainsford takes off once again. He comes across the Death Swamp and digs himself out of quicksand. He creates a trap and kills one of Zaroff's dogs, all while being determined and trying to fight back and keep himself alive.
Zaroff goes back, again. Rainsford takes the opportunity to keep moving and rest. He is awoken by the sound of Zaroff's remaining dogs and by Ivan who is coming after him. He is most likely in fear because it all happened so suddenly.
Rainsford jumps into the ocean to get away from Zaroff. He returns to the house, Zaroff is startled by him. They agree to play another game, even though Rainsford has won. Rainsford kills Zaroff, and is finally able to relax without the thought of being hunted.