Throughout Richard Connell's short story The Most Dangerous Game, Rainsford becomes increasingly more violent.
The first quote which depicts Rainsford's increasing violence is: "Suppose he refuses to be hunted?" Here, Rainford has lost his polite demeanor. No longer idle, Rainsford is beginning to stand up to Zaroff. An engaged reader can almost see Rainford's body language tense and the look on his face offer a challenge.
The second quote which shows Rainsford's increasing violence is:
He paused, almost beneath the tree, dropped to his knees and studied the ground. Rainsford's impulse was to hurl himself down like a panther, but he saw that the general's right hand held something metallic--a small automatic pistol.
Here, readers can see Rainsford's desire to fight Zaroff. Instead of wishing only to escape, Rainsford begins to think about attacking Zaroff. The only thing which keeps Rainsford from doing so is the gun in Zaroff's hand.
One last quote which shows Rainsford's increasing violence is:
Rainsford had dug himself in in France when a second's delay meant death. That had been a placid pastime compared to his digging now.
Here, Rainsford has finally decided that he needs to do anything, and everything, he can do to escape. When in France, and fearing death, Rainsford only "bunkered" in. Now, on Ship-Trap Island, Rainsford no longer only bunkers in. Instead, he creates a trap which he hopes brings death to Zaroff.