The idea seems interesting, but the execution need a lot of polish.

First the game start with this:

, it’s dark and empty, I though that some bug occurred and restarted the game for several times before seeing some zombies wandering.

Second there are no hints of what items you have to drop, what are they doing and when you can and cannot drop them.

Third when you failed the shift, it seems like there is no chance to restart the game, so again I had to restart the page.

Fourth - the UI is tiny, it’s also not properly stylized, but this is the minor issue, while unreadable UI is a major one.

I see a lot of constructive feedback here, hope it will help you to recognize weak points of the game and improve.

Cheers and good luck!

The idea is really nice! I don't know if it fits your theme but maybe adding a mechanic to lure explorers in one place could add combo potential? 

I don't really understand how to win... Do I just get all the scores equal to zero then end the night? Do I then upgrade. I think it's a cool idea, it just need to be fleshed out. Am I spawning ghosts? Am I trying to attack these people who are walking around? I don't know what's happening. If you could tell me how to play I could give it another go!

I would really appreciate it if you could review my game!

Nice work! I like the mechanic and I can see it being really fun to corral a bunch of units around and combo them with your different creatures. Also the music and sound created for a nice spooky effect :)