Yeah, damn. definitely feeling some genocide route influence from this. feels like something that should be experienced firsthand so I'll put details in another spoiler
You start by backtracking to Spamton's shop to freeze the monsters on the way. When you leave there all the NPCs are gone and it's just enemies that start running away from you after a few screens. The first person you find after starting the route, you pressure Noelle into killing him for an item you can't afford. After that she thinks about killing Kris and you tell her that's normal
So, there's a little insight on the direction this is probably taking.