What is your favorite controversial and unique mechanic from hit game Peak Souls 2?

Hello fellow Peak Souls enjoyers, this is my first post here. I'm interessted in knowing what you people with great taste especially like about PS2 and it's slightly different gameplay from the other souls games.

I especially liked the consumable healing items (Lifestones) that you had to use in the early parts of the game and are still intecivised to use later in the game. It just made you interact with your consumable slots while in other souls games you could comfortably play casually by just staying on your flask the whole time.