This game lets you pursue what you want but also moves along the story, which is why a walkthrough is a bit too difficult. You'll never get all the scenes in one playthrough. The freedom of choice is great, it encourages you to play your own playstyle. That said, a walkthrough would encourage you to go the way of maximizing your stats while also playing a way you're probably not interested in trying.
Example, say if you're really interested in Bailey and Danica. But you really want to see the Mother 4th scene in the Minyak fight. Well you can't and you'd have to play a certain way to get it now. Basically ruins your whole playthrough.
I'll even use myself as an example. I already try to maximize my MC's stats and know exactly which love interests I want to pursue, so I don't need a walkthrough. But other players wouldn't enjoy my playstyle because they have different tastes from me and wouldn't do what I would do. I'd have a blood bath behind my MC with 20 corruption points by the time of the last Jake fight. Everyone else, isn't a huge sicko like me so they'll have like around 10.
I said all of this to say, try to play your own way. You'll enjoy the game more and if you really need help then use the walkthrough as a reference during said scene(s).