Warning - there are no spoilers in my question, but there will probably be gameplay mechanics spoilers in any answers (hopefully).
I'm downloading Lies of P now to give it a shot. I'm not a big fan of RPG elements in these types of games (blasphemy I know), I prefer a focused experience; for example I liked Bloodbourne but never finished it because of all of the options, but I absolutely loved every minute of Sekiro. Basically I can't be bothered with experimenting with builds and crunching numbers, it's not for me.
I know any actual advice will depend on what I want the gameplay to feel like, so I guess all I can say is take Sekiro as an example - I'd probably be focusing on anything that will help speed and parrying (if any stats affect that?) and decent dodging.
So, do you have any advice on things I should focus on, things I should avoid or wait to upgrade, weapons to aim for etc? I don't mind spoilers.
You should start a wiki that contains 'How to play the game' posts like these, something a bit like BeforeIPlay