It never clicked for me like Sekiro did. I felt a lot of things were not telegraphed enough to react and relied on memorization. Though I probably didn't go deep enough into combat.Just finished my run. Only had difficulty with 3 bosses in the game, including the last one. By the time I was grinding against the last guy I decided to move on. Chose the weak/wrong ending and moved on to the next thing in my backlog.
Ok gang, I am playing Lies of P on easy. I suck at these games. If you read the ER thread you'll see I got it late because I sucked at these games but in ER you can overbulk. I didn't realize there wasn't an upper limit on levels and I was steamrolling mobs. I didn't want to look at the game and ruin the experience. I've died a few times in LoP but nothing too bad. I didn't play MS, I played the demo of MS2.I almost don't believe you even played MS.

Depending on how thorough you are in exploring, you should get at least enough materials to max out (Bonding) two Shells, and max lvl 3 weapons.
Kajiimagi Unfortunately the Demo doesn't let you experience the full impact of the Slayer Seal as the only Sidearm you get is the shotgun type which doesn't synergize with the Seals ability to break. Here is a vid showing how OP it is, using Tiel, the starter 2H and an easy to get Sidearm (Forgotten Crossbow):
Can do the same vs all the various bosses, though not as easily since you'd still have to learn their movesets and dodge like a madman.