There are more varied encounters in the second, with improved ai, large combat arenas with multiple routs and elevation which was mainly lacking from the first. Tall grass hiding, slits and cracks to slip through, stealthily approaching enemies from underwater, going prone under a car with the gun drawn, just so many new ways to interact with the expanded environments. The improved movement and melee combat alone makes the first game feel a bit clunky without a dodge feature.

Finally the enemy variety with the different factions has a great deal more diversity in how each faction behaves. Seraphites using bows and melee, communicating only by whistling when they know you are near. The tight nit crews of the WLF and their dog patrols which can follow your scent. Not to mention the new suit of infected/clickers.

"so I'm not really expecting to convince anybody and I'm certainly not interested in hearing about it."

So why even comment in the first place?