General Zaroff! This is inhumane and completely unethical! Although you may feel joy and pleasure, you cannot do horrific acts like these! These are men! Imagine you were in their position. They are men and so are you! You must treat them as such! You must have some sympathy for some poor sailors. Please! If you have any sympathy or feelings, please let me go and respect my decision! (Pathos)
Pathos because it taps into Zaroff's human feelings, making him feel some sort of sympathy for the humans he hunts. It also displays that the acts he commits is inhumane
General! Imagine what your father would have thought if he saw the outrageous acts you have commited! If you respect me, hunter to hunter, then you should listen to my opinion and stop this at once!
Outrageous! I gave you my hospitality and I offered you a chance, while remaining respectful!
Ethos because Zaroff respects two formidable and reputable figures; his father and Rainsford. Rainsford argues that as a respected figure, he disapproves the actions, also implying that his father would agree with him as well.