Hii, I've made a video about the game and wanted to share some feedback about it, hopefully it is useful to you if you plan on expanding it ^^
-The main concept of the game is quite interesting and you could expand it through some cinematics and a little background story.-The visuals are quite nice, but the level could be designed in a more interesting way, you could also improve on level design and integrate it with the gameplay mechanics.
-The gameplay mechanics are the classic ones, but as I've said you could use level design to create mechanics. You could add big pilars around the place as decoration while using them as separation between the people like this: H(HUMAN) P(PILAR) V(VAMPIRE)
H H H H This way you could have humans that only tell you about
V H P V having one vampire close while having to make more mental
H H H H calculations since there could be one behind the pilar and you could fail if you make quick asumptions.
In conclusion, the idea is great and I hope you keep working on it. Hopefully this is useful for the development :D, also if you could subscribe that would help me a lot :)
Regards