How do you successfully cook anything in this game?

I've found guides or figured out the other options but How do I get Jak to kill 4 people?

I might be stupid, but I have no idea how I'm supposed to play this game? I don't know if I'm just doing something wrong or if I soft-locked myself into a corner, but after a week ish, nothing happens. There's no progression with romance or plot (if there is a plot...?) and all I have left to do are the mini-games because even though I try to talk to them, they just repeat the same lines and end the conversation, but I don't think that's the end of the game because I have so many achievements left and also...

I had a perfect plan how to seduse everyone in game. Simple order: Magnolia, Jade, Jedidiah, Florence, Will, Jak, Dijon AND EVEN THE BASTARD! I romanced everyone, but where is my achievement...

Just got the game and I really love the customization options, aesthetic and darker themes but it's killin' me that the characters will get close to you very fast and ask REALLY important questions on what to do next and...the Player doesn't get a choice to answer before the main character just blurts out a "YES, I'D LOVE TO" and goes along with it? My character keeps (very enthusiastically!) doing stuff I wouldn't do while I'm trying to meet the cast and learn names. People who have beaten the game, is ...