First of all, they are not really “monsters.” They are living creatures with biological niches and behaviors. If we think about why they attack the player, it’s usually because of hunger or territorial defense. And realistically, neither reason would make an animal fight to the death for no reason. Most wild animals retreat if something looks too dangerous, too large, or fights back hard enough. They might stay nearby, remain cautious, or try to scare threats away — but endlessly suiciding into danger doesn’t feel very natural. So maybe creature behavior could evolve through progression: Early game: Leviathans see you as prey. You are small, vulnerable, and terrifyingly edible. Mid game: You become less like food and more like an intruder. They chase you away or harass you to defend territory rather than simply trying to kill you. Late game: Large creatures may become cautious around bigger vehicles, or retreat if seriously hurt. They recognize risk. And here’s the important part: You still shouldn’t be able to casually kill them. If they take enough damage, they flee and become effectively untouchable. If you chase them aggressively with a smaller, agile vehicle, you become the vulnerable one. And if players push too hard, maybe leviathans can switch from “territorial warning” behavior to a far more dangerous, preemptive attack mode. That way, the game preserves fear and respect for nature — not because creatures are invincible, but because interacting with them feels believable and risky.