If you saw It Follows, basically that.
A small neighbourhood level where something will follow you, and just walk to you until it catches up and kills you. In VR this would be pretty mortifying. Start a person off in a chair with something approaching and they gotta get themselves out.
Bonus: instead of just a short mini-game type thing it could be combined into a waifu-sim / GTA type thing with pedestrians where it'll change forms, randomly follow and not, you can run away to buy time, etc. And you have to try and get yourself laid so it'll move on.
eh? anyone wanna make this with me in UE4?