TLOU Part II is the most advanced game ever created: The realistic death animations, gore and cuts, AI reacting to other AI getting killed, melee can change depending on the enemy being near a wall, table, etc. Enemies being able to fan off fire if the molotov doesn't land directly on them, enemies being able to search for you under trucks and other objects, they also move to get the best angle on you for an open shot
This isn't everything but there's so many nice touches that adds to the realism and immersion