Yeah, I couldn't think of a compelling game mechanic for the theme that hadn't been done before - there's a YouTube devlog about a jam game called Detective Truth that basically did what I had planned. Then I got stuck on the idea 'dangerous boomerang locked onto player's position' as a mechanic instead, and worked with that instead. It's not a great Halloween-themed game, but it might have more appeal throughout the whole year in general.
Thanks for taking the time to try the game, and thanks for the feedback!